Enabling USB ports in Windows 7. How to disable or enable USB ports in Windows

Why don't USB ports work? Reasons and solution

USB interfaces are used in PCs so often that we cannot even imagine a computer or laptop without them. Various peripheral devices are connected to the USB interface: printers, web cameras, flash drives and many others. But what to do if the USB ports are out of order. Let's look at the main problems with usb operation and try to fix them.

USB interfaces are disabled in BIOS

This problem occurs very often, since suddenly turning off the light or a dead battery can throw off BIOS settings, thereby disabling the USB interfaces.

To enable them, let's enter the BIOS. To do this, after starting the computer, quickly press the Del or F2 button.

Depending on the software version and manufacturer, USB functions may be enabled in different BIOS items.

• Basic BIOS options:
• Enable/disable - Disabled/Enabled
• To do everything USB ports available - Both
• Make available ports that are located directly on motherboard-Primary
• Number of USB ports used - 2USB Ports, 6USB Ports
• Using USB 2.0 - USB 2.0 Controller.
• Changing the operating frequency of the USB bus - USB Speed.

Enabling USB in AMI BIOS

Enabling USB in Award BIOS

USB port driver removed from the system

Errors of this kind occur after a virus attack on a computer or a critical field. Windows errors. To restore the functionality of the USB controller, you should install or, if it does not work correctly, update the USB controller drivers. To update the USB driver, follow these steps:

1.Open Device Manager on the Hardware tab in System Properties.

2. Find the USB controller item and right-click on it and select “Update driver”.

3. In the hardware wizard that starts, select the item “ Automatic installation" For search suitable driver.

4. The wizard will find the driver we need and install it.

5. If the wizard was unable to find a suitable driver, we will need to download it from the Internet and install it from the specified location. To do this, when choosing the driver installation option, you need to select the “Install from a specified location” option. In the next window we will be asked to search for drivers in the specified locations. Check the box next to “Include next search location” and click browse.

In the drop-down menu, indicate the package with the downloaded drivers. The wizard will check the folder for the presence of a suitable driver and select the one you need. After this, for correct installation, you should restart your computer.

The USB controller burned out.

There are cases when, due to high voltage, the USB controller overheats and fails. The only people who can help you solve this problem are: service center, since it is not possible to fix this at the software level.

Hi all! Today we will look at several questions on the topic of how to connect USB to a computer. First, we will learn how to connect any devices to a PC or laptop. And secondly, I’ll tell you how you can connect additional USB ports to your computer if you don’t have enough of them for all your devices. So, let's go!

How to connect a USB cable to a computer?

A USB port is by far the most common type of connecting devices to a computer or laptop. There are three types of connectors: 1.0, 2.0 and 3.0. If the first one can now be found only on the oldest computers, then the second and third ones are used today. At their core, they differ in data transfer speed. And according to appearance, what is more important for us now is color. USB 2.0 has a black connector and plug, USB 3.0 has a blue color. You can read more about the specifications and differences between standards.

Before connecting the USB cable to the computer, look at the plug of your gadget - if the blue connector is connected to the black port, the device will not use all its speed characteristics to the maximum. If you plug the black plug into the blue one, then absolutely nothing will happen - the USB 3.0 port will simply operate at the speed that is maximum for 2.0.

So let's look at back panel of your computer, find a USB port of the same color as the plug and connect it.

After this, the device will either be detected by itself in the system, if it is a keyboard, mouse, webcam, or some other simple and common device for which Windows already has a driver. Or to work you will need to install the software that comes with the device on CD.

How to connect additional USB ports to a computer?

Any modern motherboard already has built-in USB ports - both 2.0 and 3.0. However, we usually connect so many different peripherals that there may simply not be enough of them, for example, to connect a flash drive or external drive and upload fresh photos to it.

Connecting a USB stick to the rear panel

What to do? There are two ways. The first, preferable one, is to buy a separate bracket with USB ports and insert it into the additional slots available on the back panel of the case - the same ones where we attach video or sound card, wireless adapter, and other components that connect directly to the board. It looks like this:

In order to accomplish this task, the motherboard must support the connection of additional USB ports. This can be determined by the presence of connectors on the motherboard labeled USB or USB 3.

Connectors for USB 3.0 are large, have many contacts and are designed to connect two ports at once in one plug.

USB 2.0 is smaller and each of them can be connected to 2 ports separately.

Accordingly, we look at the presence of such connectors on the motherboard, buy the corresponding brackets, fix them in the back of the case and connect them to our connectors.

Connecting a unit with USB ports instead of a flop

Another variation of this method of increasing the number of ports is special block with USB, which is inserted into the front of the case instead of the old floppy disk - 3.5 floppy

There are many options for designing such a block. For example, combined for USB connections 2.0 and 3.0

And in the following example, USB 2.0 ports are combined with connectors for connecting a microphone and headphones

Connecting such a block occurs in exactly the same way as the bracket described above - to the corresponding connectors on the motherboard.

External USB hub

Finally, another option for increasing the number of ports is to buy an external USB hub. However, there are a number of disadvantages, because of which I would not connect any serious equipment through it, but would only use it for flash drives or, as a last resort, a mouse.

Since this is a hub, all the load from its several ports goes to one single computer to which it is connected. Due to this overload, certain devices may periodically fall off, which is not good. If you connect a hard drive to a USB hub, the electricity supplied through it may not be enough to operate it. Therefore, we reserve this method only for light fast food - flash drives.

Instructions

To open the BIOS, press Del after you turn on the computer and before it starts booting operating system. You may need to press a different key to enter the BIOS on your computer. In the lower left corner when checking random access memory there is an inscription Press Del to enter setup. If another key is written instead of Del, press it.

The BIOS window opens. You need to control the BIOS using arrow keys and the Enter and Esc keys. Basic parameters for equipment: Disabled – disable, Enabled – use. Depending on the manufacturer and model, the versions and directory names in the BIOS may differ. The following are the most common names.

In the Advanced menu (Advanced BIOS features) you can prohibit or use the USB controller under the USB Functions command (USB Controller/USB Ports/USB Device/Integrated (OnChip) USB Controller). The Enabled/Disabled command turns all USB ports on/off, Both makes all ports available, Primary makes ports on the rear panel only available. 2/4/6/8 USB Ports – number of ports available for operation.

USB 2.0 Controller (High Speed ​​USB/USB 2.0 Supports/USB 2.0 Device). Option to disable or allow the use of USB 2.0. USB 1.1/2.0 Controller item for using all USB controllers, commands: All Disabled - disable everything, All Enabled - enable everything.

USB Speed. An option that changes the operating frequency of the USB bus. Its parameters: 24 MHz and 48 MHz.

Legacy USB Support (USB Device/USB Driver Select/USB Function to DOS/USB Keyboard(Mouse) Support). Section for USB keyboard/mouse support at the BIOS level. Enabled/Disabled command – enables/disables support, Auto – disables standard keyboard/mouse when USB devices are connected and vice versa, OS – provides support by the operating system, BIOS – provides support Motherboard BIOS fees.

Port 64/60 Emulation (USB 1.1 64/60 Emulation) – an option for optimizing devices connected to the USB port in legacy OS. Enabled/Disabled command – turns it on/off. Emulation Type (UFDDA USB Floppy/ UFDDB USB Floppy/ USB Mass Storage Emulation Type/ USB Mass Storage Device Boot Setting) – with different values ​​of the option, the USB drive is emulated in Auto mode – detected automatically, Floppy (FDD Mode or USB Floppy) – as removable media, Forced FDD - like a floppy disk, Hard Disk (HDD Mode or USB HDD) - like a hard drive, CDROM - like a drive optical disks.

To boot the OS from a USB drive, go to the Boot menu (or find First Boot Device in Advanced BIOS features). In the Boot Device Priority section, select 1st Boot Device, then check the box next to the name of your device, or opposite the USB-HDD item.

Sources:

• How to boot into BIOS from a bios 1984 flash drive

Installing Windows from a flash drive is very convenient. Storing Windows on a flash drive is much more secure than on a disk. Installing from a flash drive will also be faster than from a disk. There are times when the computer does not work or simply does not have an optical drive (DVD/CD) ROM. Then installing from a flash drive is a very good way out of the situation. If you need to reinstall Windows on a laptop somewhere on the road, it will be more convenient to do this from a flash drive.

You will need

• Computer, Windows OS, flash drive, UltraISO program, program DAEMON Tools, Internet access

Instructions

First of all, you need to burn Windows to a flash drive. The capacity must be at least 4 gigabytes. Download the one you need Windows version from . The operating system downloaded from the Internet is in ISO format (virtual disk). Next, download the UltraISO program. It will be needed in order to make it bootable.

Open Windows image using the UltraISO program. Go to the Boot menu and select Burn Disc Image. Creating a bootable USB flash drive will destroy all information stored on it. Please take this into account. Insert the flash drive into your computer. The flash drive will appear in the program menu, select it. Select "USB-HDD" as the recording type and click "Record". The recording process will last from 10 to 25 minutes. Upon completion, you will be informed that the process has been successfully completed.

Restart your computer and continuously press the DEL key. This will take you to the BIOS. Select the “BOOT” line, then in the “BOOT DEVISE PRORITY” line select “USB-HDD”. Click on the “Save end Exit” command.

The computer restarts and the process begins Windows installations from a flash drive. If you do not want to install Windows at this moment, simply remove the flash drive from the computer. In order to start the installation process, you just need to insert the USB flash drive into the USB port before turning on the computer.

If you don't want to download Windows from the Internet and it is already on the disk, you need to convert it to ISO format. Download and install the DAEMON Tools program. Insert the disk with DAEMON Tools into the computer drive. In DAEMON Tools, select the File menu, select Create New Image. After the process is completed, you will have Windows in ISO format, which you can write to a flash drive and install Windows from it as described above.

New versions of Windows operating systems include the ability to create backup copy or image. It allows you to quickly bring the system to working condition without resorting to a complete reinstallation.

You will need

• - DVD disc.

Instructions

To create an operating room image Windows systems Seven, go to the “Control Panel” menu. Now open the System and Security menu and go to the Backup and Restore submenu.

Find the item “Create a system image” and click on it. Wait while the operating system prepares the files for archiving. Specify the location where the future OS image should be stored. To increase the degree of data security, it is recommended to use external USB drives. This will allow you to restore the operating state of the system even in the event of damage to the used hard drive.

Click "Next" after selecting the device to store the image. A window will open with a list of sections that will be included in the archive. Typically these are the system and boot partitions of the hard drive. Click the "Archive" button. This process takes quite a long time. It is better to leave the computer turned on at night.

Unfortunately, it is not enough to simply create an image. After all, it will need to be launched in the event of a system failure. Repeat the procedure for entering the “Backup and Restore” menu. Click the "Create a system repair disc" button.

Insert a blank DVD into a working drive. Click the "Create Disk" button. Wait until the required files are written. Please note that you can use a regular installation disk as a recovery disk. Windows disk Seven.

If the operating system stops loading, insert the created disk into the drive. Turn on your computer and press the F8 key. Select this DVD drive from the menu that appears. When a menu appears containing options for restoring the operating system, select “Restore the system from an image.”

Now specify the storage location for the archived copy of Windows. Wait until the Windows Seven OS image recovery process completes.

There are several ways to start installing the operating system. Inexperienced users often start it from the desktop. This often leads to the fact that the old OS is not removed, and the new one is simply installed on top of the old one. As a result, the user receives two operating systems, installed on one hard section disk. It is much more correct to start loading the OS from the BIOS.

If the USB ports on your PC are not working and Windows settings and driver updates do not help, perhaps the controller was disabled in the BIOS. In this case, you will need to go to the configuration menu and turn everything back on.

There are many different versions BIOS with its own interfaces and subtleties of operation. Also, a more modern complex can work on your computer - UEFI, which supports a full GUI interface. This article discusses the distributions that are most often installed on motherboards.

Entering BIOS settings

To start changing the configuration, you need to go to the corresponding menu. It can be opened during power on personal computer- before it started Windows boot from the hard drive.

Turn on your PC. In case it is already running: reboot. Wait for the speaker to beep: a short, single beep indicates that all internal components necessary for the computer to function have been detected.

Now you need to click hotkey to call the configuration. This must be done before changing the screen. If you don't have time and Windows starts loading, reboot. The keys depend on the installed motherboard model and version BIOS firmware. You can find it in the user manual that came with the motherboard, on the manufacturer’s official website, or view on your PC screen when loading it:

If you don't know the board model, it's okay. Just try pressing the following keys: Tab, Delete, Esc, F1, F2, F8, F10, F11, F12. One of them will definitely do.

You don't have to try just 1 option at a time. You can quickly press all the buttons from the list without any problems. One of them will come up and launch the BIOS settings, and the rest will be ignored.

Entering the BIOS/UEFI settings of the latest PCs

Many modern computers boot up so quickly that you won't be able to access the keystrokes when you turn them on. This is also true for laptops. That's why latest versions Windows OS has a new launch feature. Let's show it using Windows 8.1 as an example.

Your computer or laptop will reboot into setup mode. After restarting your PC, you will also be able to select option to run from a USB drive or DVD.

Menu navigation

Almost all BIOS versions are devoid of GUI. This means that you will have to work only using the keyboard, as in, for example, Windows console. Navigation is carried out using the up-down and right-left arrows. To open any section, use the Enter key to go back - “Escape”. A small reminder of the keys used is always shown on the screen.

Firmware complex UEFI installed on the most expensive and powerful motherboards. It supports more drivers and can use a mouse. Its interface will be familiar to users of Windows and other modern operating systems.

Each version has its own interface and sets of options. Even the names of the same parameters may differ. The following article describes several popular BIOS releases.

AMI BIOS

A very common option that can be found on many modern computers. The main menu is divided into 2 parts: a list of categories and various actions, such as exit or save. You will be working on the left side.

You need to go to the section called “ Integrated Peripherals" There is no Russian version of the interface, so all commands are only in English. Use the Down arrow to highlight this item and press Enter.

Here you need to enable ( Enabled) 4 options:

• USB EHCI controller– main controller. If the motherboard has version 3.0 ports, this item will be divided into 2 parts: “Controller” and “Controller 2.0”;
• USB Keyboard Support– keyboard support;
• USB Mouse Support– mouse support;
• – work with external data storage: flash drives, disk drives, smartphones and digital cameras.

In some older versions there are only 2 points " USB controller" And " Legacy USB storage support».

When you're done with the settings, press the F10 key to save your changes and restart your computer.

Phoenix AwardBIOS

Another popular version that can often be found on modern laptops. Doesn't have home page, like AMI, but with convenient thematic tabs at the top. You can move between sections using the left and right arrows, and between items using the up and down arrows.

Go to the section " Advanced» using the Right arrow. In it, find the category “ USB configuration" All items in this section must be moved to the position “ Enabled" In some versions the category " USB configuration" may be located in the " tab Peripherals" and not in "Advanced".

To exit the menu, press F10 and confirm exit.

AMI BIOS for Asus

AMI version used on Asus laptops. Externally it is very similar to Phoenix - a similar bookmarks bar. Settings USB are in the section " Advanced" Go there, enable all options and exit using the F10 button.

UEFI

Contrary to popular belief, UEFI is not part of the BIOS. It can rather be called a more advanced, but less popular competitor. There are a large number of different versions, each with their own interfaces. However, here the controls are similar to the usual Windows, so you can easily find the options you need.

Windows Settings

If at the BIOS level all ports and controllers are enabled, but the USB ports still do not work, there may be a problem in the settings of your Windows system.

First, just try disconnect and reconnect the device. This will check if the drivers are correct. If there's something wrong with them, Windows will try to reinstall them.

If nothing happens when you reconnect, try turn on the controller V Windows registry. To do this you need to do the following:

Video: how to configure any BIOS to boot from a USB flash drive

Have the USB ports on your Windows computer or laptop stopped working? The first thing you need to do is check each port on the computer; if all of them do not work, you need to determine the reason.

The simplest and reliable way, this is to connect a USB keyboard, turn off the computer, turn it on and try to go to the BIOS in a way familiar to you. If you can’t get into the BIOS using just one port in a way you couldn’t before, the reason is technical.

In this case, you need to open system unit and check the connection of the USB connectors to the motherboard. If everything is in order, you need to install a discrete USB card and check whether the ports from it work (maybe your motherboard is burnt out).

If you can get into the BIOS, but the USB ports do not work in the operating system, you should check for installed drivers, reinstall them, update to the latest version.

Sometimes USB ports do not work when equipment is connected to them new version(before USB 1.0 or USB 2.0, connect a flash drive or external HDD with USB 3.0), so it’s worth checking the equipment for compatibility.

Remember that USB ports, in addition to transmitting information, are also power ports, so it often happens that due to a weak power supply, they may also not work correctly.

If your computer or any application does not work correctly after connecting the device to USB port, then there may be several reasons for this. Before pinpointing the source of the problem, you need to check the operation of the peripheral device, USB port, or USB driver. Below we provide a list of several simple steps, which will help you identify the problem and fix it yourself, without contacting a computer technician.

To reset the USB driver and software that are conflicting, you simply need to restart your computer. Very often this helps fix the problem.

Sometimes a different order can help. Turn off the computer and disconnect any devices connected to the USB ports, including the keyboard and mouse. Turn on the computer again and when the operating system boots, one by one, connect all the peripheral devices that were previously disconnected to the USB ports. If a problem occurs when connecting a specific device, such as USB RAM, make a note of which port it happened on. Try connecting this device to another free port. If the problem goes away, then the specific USB port is faulty. Otherwise, the problem must be looked for either in a peripheral device or in the USB cable.

USB cable and connector

When a USB port does not work, very often the cause of the malfunction may be a damaged cable or connector. Carefully inspect these connection elements for damage such as cracks, chips or cuts. Look inside the USB connector and connector and check for dirt, dust, or other small objects. You can clean the connectors yourself using a dry brush or an air compressor (vacuum cleaner). This must be done with the cable disconnected. If the interface cable is severely bent or broken, you should replace it immediately - a new cable costs a penny.

Differentiating the problem - port or device

If a program or computer stops working normally immediately after connecting a new device to the USB port, then you should try connecting another device to it. If the computer continues to operate normally, the problem is in the peripheral device. Do you have a second computer? Try connecting a suspicious device to it and recheck its functionality. If the situation repeats, it definitely needs to be changed. If you used a USB hub, remove it from the connection circuit. In case of problems, the USB device should be connected directly. In addition, problems may arise if you connect a lot of peripherals at the same time or connect several devices of the same model at the same time, for example, two smartphones or printers.

Reinstalling the driver

Windows usually displays a message if a problem is detected with the USB driver. If this happens, open the “Control Panel” through the start menu of the operating system. Find the “Device Manager” item in it, open the utility and in the list of installed equipment, find the subsection “USB Controllers” or “USB Universal Serial Bus Controllers”. Expand this item and find in USB list devices the item that is marked exclamation point on a yellow background. If you find such a device, right-click on it and select the “Delete” context menu item. Reboot your computer. After this, the operating system will automatically reinstall the remote driver immediately after loading. If reinstalling the driver does not solve the issue, you should try updating it.

Driver update

If the USB port does not work, you can try to manually update the USB device driver. To do this, open the “System and Security” section in the “Control Panel”, where you will find the “Device Manager” subsection. Enter administrator credentials if prompted by the system. Next, find the problematic USB device in the “USB Controllers” list and double-click on it to open the settings dialog box. Open the “Driver” tab, and in it click the “Update” button. To begin updating the driver, enter your system administrator credentials again. After the update, restart your computer and check the functionality of the problematic device.

What is the difference between the USB ports located on the back of the computer and on the front? The difference is that those USB ports that are located on the back connect directly to the USB controller, which is located on the motherboard itself and is an integral part of it. But the front USB ports go through a USB hub and are connected via a cable, and here it may be that the cable is of poor quality, and problems with the ports may appear.

If you connect two power-hungry USB devices (for example, a portable HDD and phone) then one of these devices will run out of power and it will either not work correctly or not work at all. Why you ask? The USB controller provides the device connected to it with a power supply of 500 mA at 5 V. If the USB interface device does not have an additional power adapter, then it should work from the USB interface, without additional power, that is, 5 V should be enough, but if to the controller Two devices are connected using a USB hub.

The USB ports on the front of the computer are USB hubs that have one 9-pin input connector for connecting to the motherboard on one side and multiple USB ports for connecting devices on the other. The USB hub cable transmits information to the connected device, and also supplies it with electricity, but if there are two devices, and the power to the hub is still supplied at 500 mA at 5 V, then of course there is not enough power for the devices.

You can connect a mouse, keyboard and flash drive to the USB hub, and if you want to use other devices such as a smartphone, external hard disk, etc. , you must use a USB hub with additional block supplying 5 V to each USB port.
USB ports don't work

If you suspect that the USB port on your computer is not working, check the device you are connecting to another computer. After all, it also happens that it is not the USB port that does not work, but the device that you are trying to connect, but it also happens the other way around. Check the device on another computer. In Award BIOS, find the Integrated Peripherals parameter, and in Ami BIOS, the Advanced parameter, go into them and see the USB Configuration item, press Enter, our USB Controller or USB Controller 2.0, should be in the Enabled position, that is, enabled .

USB ports don't work

It also happens that the USB port works and the device is working properly, but there is no connection between the computer and the device...... here the fault may be in the USB cable. And there are cases when the USB ports on the front panel are not connected at all.
Maybe the USB hub is faulty? Try using a different USB hub with a good shielded cable. Connect it to another 9-pin connector on the motherboard.

Sometimes the USB ports on the front panel are connected using pin cables (they also say in bulk), it may well be that the cable is faulty or the pinout has been mixed up.

Also, the cause of malfunctioning USB ports may be a low-power, or possibly faulty, power supply.
Or maybe the south bridge is faulty. You should also not forget about updating drivers, both for connected devices and for the motherboard chipset.

You can overload the USB hub and the connected device will stop responding to you; this can be cured by simply restarting the computer. Almost all USB hubs have power management and Windows can turn off the device to save power.

Firstly, if when you connect a flash drive to a computer or some other equipment, the port does not work quite correctly or the device connected to the computer is not detected by the system at all, then in this case you should make sure that the controller is turned on PC motherboard.

Quite often, users forget to turn on the USB controller. It seems like a simple, but still common problem when the user starts the PC, but the device is not detected. It is possible to fix everything here; to do this, you need to go into the BIOS and enable the appropriate parameter. By the way, if you don’t know what a BIOS is, then I recommend that you definitely read the article

So, go to the BIOS and find the item “Integrated Peripherals - this applies to the Award BIOS,” or to the Ami BIOS - Advanced.”

Next, press “Enter” and go to “Onboard Devices Configuration” and make sure that the “USB Function” and “USB 2.0 Controller” items are in the “Enabled” position. If everything is so, then everything is included. Otherwise, the parameter can be turned OFF, position “Disabled”. If the option is disabled, you should enable it. Next, save the changes, then reboot the PC system and check the functionality of the USB port. Be sure to check whether the USB ports on the front panel of the system unit are connected to the motherboard itself using the so-called connector.

If the port still doesn’t work, then we move on.

Secondly, maybe the problem with the port not working is completely hidden in the USB extension cable? For example, there are situations when the computer does not recognize a peripheral device (printer), for the simple reason that the USB cable itself is simply damaged. The reason for cable damage can be very varied, for example, you accidentally placed a chair on the cable or some heavy object and simply pinched it. Therefore, do not be lazy to check the cable itself.

Thirdly, it is quite rare to encounter such a problem when the USB port does not have enough power. I will give you a specific example. Imagine that you have connected a flash drive and a printer to the front of the system unit case in the USB connector. As a result, the operating system, when sending data for printing, informs us that the document could not be printed. In general, your computer simply does not see the printer. And if you restart the computer, the printer is detected by the system, and you can easily print a document. However, after a while, the computer again loses connection to the printer and the printer does not print. Do you know why?

This seemingly trivial problem at first glance is due to the fact that there is a lack of power for the USB port. As a result, the USB port refuses to function properly. Basically, such an incident associated with a lack of power occurs when connecting several devices to the front panel of USB ports.

Of course, not always, but such situations still occur. These USB ports are connected to the motherboard using a cable. In addition to transmitting data, this cable also powers the USB hubs themselves. It is possible that the power supplied simultaneously to two devices connected to the USB hub may not be sufficient. In this case, I can recommend that you connect the printer to the built-in USB port, which is located on the PC motherboard.

You can also change the CMOS battery on the board. It happens that the problem completely disappears after replacing the battery on the motherboard. What kind of battery is this and where it is located, you can find out in this article:

In general, if your USB port, which is located on the front panel of the system unit case, does not work, then try replacing the USB hub itself. Who knows, maybe it is the one that is faulty.

You can also try plugging the cable into another USB connector on the motherboard.

Fourthly, if the USB port controller, which is responsible for identifying and starting the device itself, has failed, then things are, of course, bad. There is, of course, the opportunity to take and resolder the controller itself on the motherboard, but this takes time, you need to have the controller itself, and, of course, the soldering station itself. From a time-cost point of view, it is not entirely advisable. Another option is to entrust it to specialists, although this also has its pitfalls, price, quality of work, as well as the competence of the specialist who specifically works on this problem.

Fifthly, peripheral and mobile devices may not be recognized on your computer due to the lack of drivers and special software. We cannot exclude the fact that if you have been using your operating system for quite a long time and the system has not been updated at all, and indeed the Windows build is not original version, then in this case it happens that the drivers are considered outdated and therefore the system constantly freezes.

Sometimes Windows disables the USB hub altogether to save power. To prevent the USB device from being disconnected, you will need to do the following.

Open “Device Manager” by right-clicking on the “Computer” shortcut and selecting “Properties”.

After the Device Manager window has opened, double-click with the left mouse button on “USB Controllers” and expand the branch.

Now all you have to do is go to the root USB hub and in the “Power Management” section uncheck the box, as shown in the figure below.

Sixth, sometimes reinstalling the operating system helps fix the problem when the USB port does not work. Although, of course, first try to roll back the system to its previous state. Here is an article that will tell you how to do this:

Seventhly, perhaps your system contains some faulty equipment, which is precisely the obstacle to the normal operation of the USB port.

This problem is very relevant in our time. After all, quite often users directly encounter this. So, there is a solution. USB ports on a computer may become stuck, contacts may short out, and many other additional problems may occur when working on a computer.

We find a way out of our situation, check all devices for connection and disconnection. You will need to disconnect all devices and connect one at a time, for example, connect the keyboard first and see if it works, then connect the next device, let it be a mouse and so on. Connect additional USB devices, if they don’t work, then the problem is solved or you need to look in peripheral devices, maybe there is a short circuit there, but you never know.

Eighth, they completely forgot to enable the serial bus controller in the device manager. There are times when you don’t pay attention to the operation of USB devices, turn on the computer, download music, listen and enjoy new works of art. True, everything comes unexpectedly, suddenly you need a USB device, and then there is silence, it doesn’t work. The thought immediately comes to mind, maybe the controller is not turned on, let me take it and check, it is so.

Each PC has a device manager that shows which devices are connected, whether all drivers are installed and updates made.

In general, I think that you probably already know that if any driver is missing, the system automatically marks it with a yellow exclamation mark, this means a malfunction, as a result, with two clicks of the mouse you open an additional window, information about the code is displayed here malfunction and the possibility of its restoration.

Ninth, if all the above methods did not give positive result, then I recommend that you install a USB PC controller on the motherboard.

If your computer has a low-power power supply, for example 300 W, then it is likely that the cause of all the troubles is hidden in it, install a more powerful power supply, say 500 W, and check if the USB ports are working.

Concluding today's article, I would like to say that it is not always possible to easily find the culprit of all problems, sometimes it is not enough to simply reinstall Windows to find out what really happened.

If there are no drivers for serial bus controllers and the controllers themselves are marked with an exclamation mark, in this case you should either install drivers for the controller, or you can remove all controllers and restart the computer. After the computer boots, the system will try to install them again, and perhaps all USB ports will work properly again.

Restarting the computer
If all USB ports for some reason stop functioning and USB devices are not detected, then to begin with it will only be enough to reboot the system unit. Perhaps this procedure will be eliminated immediately. This can happen if there were no problems loading the drivers.

In Device Manager, update the hardware configuration
A situation may arise when restarting the computer is not possible because it is performing some important operations. That is why, without rebooting the entire computer, you can reboot just the driver. This can be done through Device Manager. To take this action, just right-click on the “My Computer” shortcut and select “Manage.”

In the window that appears as a result of this, you need to click on the “Action” tab, after which you need to click “Update hardware configuration”. If as a result of this procedure the “USB Controllers” section appears, then the problem is completely resolved, and USB will continue to function.

Disabling the USB controller
There is one great way to make USB ports work. To do this, you need to disconnect and reinstall the USB controllers. You should immediately launch the same “Device Manager”. A list of equipment will appear in a new window, and from it you need to find the USB controllers section. Next, you need to select and delete each of these devices. After all devices have been removed, you must restart your computer. This will reset the controllers so the USB ports will be available again.

USB controllers: driver update
The USB controller drivers may be damaged, therefore, the USB ports will not work. In such a situation, the only correct solution is to find and reinstall the correct drivers. To do this procedure correctly, you should find out the manufacturer of the USB port, because you need to download the appropriate driver. If you manage to complete this task, then installing the driver will solve the problem in an instant.

Disabling others USB devices
Of course, situations may arise when many USB devices are connected and the laptop will simply be overloaded. There may not always be enough power for all connected devices.

Entering BIOS settings

To start changing the configuration, you need to go to the corresponding menu. It can be opened when the personal computer is turned on - before Windows starts loading from the hard drive.

Turn on your PC. In case it is already running: reboot. Wait for the speaker to beep: a short, single beep indicates that all internal components necessary for the computer to function have been detected.

Now you need to press the hotkey to call the configuration. This must be done before changing the screen. If you don't have time and Windows starts loading, reboot. The keys depend on the model of the installed motherboard and the BIOS firmware version. You can find it in the user manual that came with the motherboard, on the manufacturer’s official website, or look at it on the screen of your PC when it boots:

PC screen at boot

If you don't know the board model, it's okay. Just try pressing the following keys: Tab, Delete, Esc, F1, F2, F8, F10, F11, F12. One of them will definitely do.

You don't have to try just 1 option at a time. You can quickly press all the buttons from the list without any problems. One of them will come up and launch the BIOS settings, and the rest will be ignored.

Entering the BIOS/UEFI settings of the latest PCs

Many modern computers boot up so quickly that you won't be able to access the keystrokes when you turn them on. This is also true for laptops. Therefore, the latest versions of Windows OS have acquired a new launch feature. Let's show it using Windows 8.1 as an example.
Swipe your mouse from top to bottom or bottom to top along the right edge of the screen and click “Options” in the window that appears.
Click on “Change computer settings”
Click "Update and Recovery".Reboot in special mode
Next: “Recovery.”
Under Special Boot Options, click Restart Now.

Your computer or laptop will reboot into setup mode. After restarting your PC, you will also be able to choose the option to start from a USB drive or DVD.

Menu navigation

Almost all BIOS versions do not have a graphical interface. This means that you will have to work only using the keyboard, like in the Windows console. Navigation is carried out using the up-down and right-left arrows. To open any section, use the Enter key to go back - “Escape”. A small reminder of the keys used is always shown on the screen.

The UEFI firmware package is installed on the most expensive and powerful motherboards. It supports more drivers and can work with a mouse. Its interface will be familiar to users of Windows and other modern operating systems.

Each version has its own interface and sets of options. Even the names of the same parameters may differ. The following article describes several popular BIOS releases.

A very common option that can be found on many modern computers. The main menu is divided into 2 parts: a list of categories and various actions, such as exit or save. You will be working on the left side.

You need to go to the section called “Integrated Peripherals”. There is no Russian version of the interface, so all commands are only in English. Use the Down arrow to highlight this item and press Enter.

Here you need to enable (Enabled) 4 options:

USB EHCI controller – main controller. If the motherboard has version 3.0 ports, this item will be divided into 2 parts: “Controller” and “Controller 2.0”;
USB Keyboard Support – support for keyboards;
USB Mouse Support – mouse support;
Legacy USB storage detect – works with external data storage: flash drives, disk drives, smartphones and digital cameras.

In some older versions there are only 2 items “USB controller” and “Legacy USB storage support”.

When you're done with the settings, press the F10 key to save your changes and restart your computer.

Phoenix AwardBIOS
Another popular version that can often be found on modern laptops. It does not have a main page like AMI, but is equipped with convenient thematic bookmarks at the top. You can move between sections using the left and right arrows, and between items using the up and down arrows.

Go to the "Advanced" section using the "Right" arrow. In it, find the “USB configuration” category. All items in this section must be set to “Enabled”. In some versions, the “USB configuration” category may be in the “Peripherals” tab and not in the “Advanced” tab.

To exit the menu, press F10 and confirm exit.

AMI BIOS for Asus
Version of AMI used on Asus laptops. Externally it is very similar to Phoenix - a similar bookmarks bar. USB settings are located in the "Advanced" section. Go there, enable all options and exit using the F10 button.

UEFI
Contrary to popular belief, UEFI is not part of the BIOS. It can rather be called a more advanced, but less popular competitor. There are a large number of different versions, each with their own interfaces. However, here the controls are similar to the usual Windows, so you can easily find the options you need.

Windows Settings
If at the BIOS level all ports and controllers are enabled, but the USB ports still do not work, there may be a problem in the settings of your Windows system.

First, try simply disconnecting and reconnecting the device. This will check if the drivers are correct. If there's something wrong with them, Windows will try to reinstall them.

If nothing happens when you reconnect, try enabling the controller in the Windows registry. To do this you need to do the following:

Call the “Run” dialog using Win + R (or through “Start”: in XP and 7 by left-clicking on it, and in 8 and 10 versions by right-clicking). enter regedit
Enter
regedit
and click OK.
Go to "HKEY_LOCAL_MACHINE SYSTEM CurrentControlSet Services USBSTOR" Registry Editor
Double-click on the “Start” entry to open the editing window.
Change the value to "3". With any other parameter value, the USB ports will not work.