How to enable USB controller in BIOS. Connecting the com usb port in Windows

The reasons for problems due to which USB ports on a laptop do not work can be completely different - from hardware failure to “lost” motherboard drivers or the controllers themselves.

However, usually the user can cope with most problems on his own, without turning to specialists - if he knows how to do it.

If there are a lot of USB ports on the laptop (for example, 3 or 4), the problem may not be so critical, and its solution can be postponed.

But if there are only 2 connectors or there is a constant need to use connected devices - flash drives, and even printers - the issue should be resolved as soon as possible.

Moreover, some methods will take no more than a few minutes.

First Troubleshooting Steps

A message that appears on the screen about the USB ports stopping working or the laptop not responding to a drive installed in the corresponding slot may indicate.

Sometimes you can solve them with a simple reboot - there is a small chance that the fix will happen automatically.

Increase the likelihood of the positive effect of a reboot, which actually sometimes helps, You can do it in a not quite usual way:

1 Completely disconnect the laptop from the power supply (if it was, for example, charging);

2 Remove the battery and leave the laptop in this state for about 5 minutes;

3 Insert the battery back and turn on the device.

If no messages about non-working ports appear on the screen, but the flash drive is still not readable or a peripheral device cannot be connected to the laptop, it is possible that the problem lies with this equipment.

The assumption is checked by connecting gadgets to other ports of the laptop - or to another computer.

Other USB devices

Another problematic situation with USB ports arises when a large number of external devices are simultaneously connected to the laptop.

For example, a user has already connected three gadgets ( , and ) to four ports, and then tries to install a flash drive as well.

Sometimes such a drive simply will not be detected by the system - and turning off 1-2 peripheral devices allows you to check the assumption.

Simultaneously connect a large number of USB devices and adapters to the laptop.

Most often, this situation occurs not when connecting peripherals directly to the laptop, but when using a “hub” (USB hub that increases the number of connections).

You can solve the problem by reducing the number of connected devices - or even better, by removing the hub and connecting all gadgets directly.

Incorrect BIOS configuration

You can find a list of ways to solve problems with USB ports.

Sometimes using this interface it is possible to enable self-disabling controllers on the motherboard.

To activate, you need to perform several steps:

• Reboot the system while simultaneously pressing the function keys to enter the BIOS (for some laptops this is F1 or F2, for others - Del or Esc).
• Select the Advanced or Integrated Peripherals section.
• Go to the USB Configuration menu item and change the parameter value in the USB Controller section (there may be several of them with different names) to Enabled.

BIOS interface settings.

After a reboot, the hardware configuration on the laptop will change, and USB ports that were not previously recognized by the system may appear to be working.

System Settings

A laptop running on battery power can automatically turn off some controllers to save energy - especially if it approaches critical values.

In this situation, first of all, you should connect the laptop to the network, and then change the power settings, by following these steps:

1 Open Device Manager.

2 Select the branch indicating serial bus controllers.

3 Find and open the USB root hub subkey.

4 Double-click the properties of the hub and go to the power settings.

If the problem was incorrect power consumption settings that caused the laptop to automatically turn off the ports, there will be a check mark here to allow the hub to turn off power.

By removing it, you can restore the functionality of the ports.

The steps are repeated for each hub if there are several of them on the laptop.

Prevents the system from turning off USB ports to save energy.

Driver problem

The problem may be - and in most cases it is - in problems with USB drivers.

You can find the problem by going to Device Manager(via computer properties or by typing in mmc devmgmt.msc).

It is possible that one of the ports is marked in the list with a special icon - a yellow triangle with an exclamation mark, indicating that the equipment is not working properly.

You can try the problem solve in one of 2 ways:

• Try updating the drivers (preferably an Internet connection) in the properties of the USB controller.
• Remove the device marked with a yellow triangle from Dispatcher And restart laptop.

When using the second option, the system rebooted will try to install new software for discovered “new” equipment. Sometimes this will restore port operation.

For the first option, you may need to find out the ID number by which the corresponding driver is searched on the Internet - this identifier is located in the device properties on the details tab.

Determining USB port ID.

The problem, which is the motherboard drivers not working properly (this usually happens with outdated laptops released several years ago), is solved by downloading and installing the appropriate software.

To do this, the laptop user first needs to find out - for example, use the AIDA64 application, which is paid, but works without entering a key confirming payment for a certain trial period.

The name of the device will help you identify and msinfo32 command, entered in the “Run” form (called by the Win + R keys).

Determining the name of the motherboard.

You can try to find drivers for the corresponding board on the website of its manufacturer - or on the resource of the company that developed the chipset.

You should know: If you don’t have the time and experience to find and update drivers, you can use the utility. After installation on the laptop, it will independently check and update all the necessary software. The disadvantage of using this method is that if you do not choose to manually configure updates, the application will automatically replace drivers for almost every part and even update some programs - this usually takes several hours.

A utility for searching and updating control programs and other applications.

Incorrect operation of the operating system

Replacing this part returns the port (or several connectors at once) to its normal state.

In order to encounter such problems as rarely as possible, the user should not connect a large number of USB devices to the laptop - especially using special splitters (“hubs”).

It is also worth enabling automatic installation of updates in the appropriate section of Windows - this usually allows the system to independently resolve problems with drivers.

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 a suddenly turned off light or a dead battery can reset the BIOS settings, thereby disabling 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
• Make all USB ports accessible - Both
• Make available ports that are located directly on the 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 Windows error field. 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 launches, select “Automatic installation” to search for a 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. Only a service center can help you solve this problem, since it is not possible to fix it at the software level.

Peripheral devices such as a mouse, keyboard, Web camera, and printer are usually connected to the computer via USB ports. In this case, it often happens that one or more ports stop working. That is, when you connect, for example, a flash drive to a computer, it is not recognized, the keyboard or mouse may freeze, and the printer may not respond or print pages.

There are several likely reasons why some or all of the USB ports on your computer are not working. Let's try to understand this issue and find out what should be done to restore normal functioning of the computer.

Checking BIOS settings

The first thing you should pay attention to is the computer's BIOS settings. To enter the BIOS you will need a working keyboard. If the keyboard is connected to the computer via USB and it does not work, then you need to connect a keyboard with a PS/2 connector. Otherwise, you simply won't be able to do anything.

So, let's go into the BIOS, for which, when starting the computer, you need to press the enter key, usually DEL. There may be another key that appears on the screen and is listed in the motherboard manual. After entering the BIOS, find the section responsible for integrated devices (Integrated Peripherals) or the “Advanced” section. Here you should find the “Onboard Devices Configuration” subsection. It contains the parameters responsible for the operation of USB controllers: USB Function or USB 2.0 Controller. These parameters must be Enabled. And if one of them is disabled, then hover over it and press Enter, thereby enabling it. To ensure that the changes you make are not lost, you must save them by pressing F10 and confirm saving by pressing the Y or Enter key.

After restarting the computer, check if the USB ports are working. And if not, then you should look for the reason elsewhere.

USB ports on the front of the computer do not work

As a special case, USB only on the front panel may not work for you. In such a situation, you need to check whether the necessary connectors on the motherboard are connected and whether the wires are damaged. To do this, open the side cover of the system unit and pay attention to the connector at the bottom of the motherboard. On the board itself there is an inscription USB1 or USB2, as well as on the block itself. The wires from the block go to the front panel, and if they are disconnected or broken in one place, then you have discovered the cause of the malfunction. Damaged wires should be connected or replaced. It would also be a good idea to check the contact in the connector on the motherboard. It is also worth paying attention to the board located on the front panel. There may be a short circuit; by the way, such a short circuit can be caused by accumulated dust. Therefore, be sure to clean the system unit from dust.

Problems with the device itself or the cable

The next source of problems with USB may be the cable with which, for example, the printer is connected. This fault is easy to identify and fix. We connect the flash drive to the connector being tested. If it works, then we try to connect another known-good equipment, for example a USB hub, using a suspicious cable. If it also refuses to work, then the reason is clearly in the cable and it should be replaced.

Power outages

There are situations when there is simply not enough power for all devices. For example, connecting an external hard drive that uses two USB connectors at once may disable the printer or keyboard. In this case, the power of the power supply is not enough to provide energy to all consumers. In this case, the problem may not appear immediately, but after some time after turning on the computer. There are several ways out of the situation. If you have a low-power power supply installed, for example, 300 W, then it would be logical to change it to a more powerful one, 450-600 W. You can also use an active USB hub (with external power). It will allow you not only to increase the number of connected USB devices, but also to power them from a separate power supply.

Another reason that affects USB operation is a dead CMOS battery. But at the same time, every time you turn on the computer, you will observe a lost system time and date. After replacing the battery the problem goes away. But this does not occur often, so you should check other possible sources of malfunction.

Missing or incorrect installation of USB drivers

Causes associated with software problems in Windows 7/10 can be identified using Device Manager. If you notice that one or more devices in particular are not working, regardless of the port used, this may indicate that the problem is in the device itself. Open Control Panel and go to Device Manager. All connected devices will be displayed there. If there are items in the list that have a yellow exclamation mark next to them or the name is Unknown Device, then the problem is with this very device. There may be several possible problems here.

Often USB inputs stop working after reinstalling Windows 7/10. The reason is incorrect installation of drivers or the necessary drivers may not be found at all. You will have to select and install manually.

Often, to fix a problem you just need to update the drivers. So, if automatic Windows updates are disabled, and the system itself was installed quite a long time ago, then the relevance of the software is lost, and system errors may appear. In this case, the device begins to work incorrectly, or even stops functioning altogether. To update (reinstall) USB controller drivers, you can use a CD/DVD with drivers for the motherboard or download the necessary drivers from the motherboard manufacturer's website.

You can also turn off the power saving feature for all ports using Device Manager. Expand the list of used USB devices hidden in the sections “USB Controllers”, “Mouse and other pointing devices”, “Keyboards”. Double-click on the desired device to open the properties window. Now switch to the “Power Management” tab and uncheck the “Allow the computer to turn off this device to save power” checkbox. Thus, the device will always be activated under any circumstances.

If some equipment is not recognized, then there may be either a problem with the drivers already known to us, or a hardware problem, consisting of a lack of contact, a damaged cable, or a malfunction of the controller. Moreover, it often happens that when a faulty device is connected, the others stop working normally. The keyboard starts to freeze, as does the mouse, and the printer stops printing. The problem is similar to power shortage, that is, all the power consumption goes to a faulty device, which may have a simple short circuit or other malfunction.

USB ports not working due to controller damage

If none of the above actions helped restore the functionality of the USB ports, then you should check the USB controller of the motherboard, which may have failed. In this case, high-quality repairs and diagnostics should be entrusted to the specialists of the service center. As a way out of the problem, try installing an expansion card, the so-called USB PC controller, which is installed in the PCI slot on the motherboard. This solution is noticeably cheaper than repairing the motherboard USB controller, and when using an additional USB hub, the problem with the lack of ports will not be relevant at all.

As you can see, finding and fixing problems with USB ports is quite a troublesome task, and all because there can be a lot of reasons. Consistent search and elimination of obviously incorrect paths will allow you to identify and eliminate the problem.

In this article, I will tell you in detail how to enable usb support in bios, using the example of an ASUS and HP laptop. Unfortunately, there are times when you have to revive a laptop or computer due to a failure of the operating system, various errors, viruses, etc., as recently happened to me, the laptop did not respond to the keyboard, touchpad, or USB ports, as a result of which I had to reinstall the operating system (Windows 7), but before that, of course, I had to save important files, so I downloaded the first available LiveCD (an operating system that does not require installation, which, when you turn on the computer, boots from a CD or flash drive and with which you can restore your operating system (for example Windows)), recorded on a flash drive and loaded accordingly.

Now, in order, how can you boot a laptop or computer from a USB flash drive? The first thing you need to do is plug the flash drive into the USB port of your laptop, then turn on the laptop, press and hold the “Esc” button (in “HP” this is the “TAB” key), a window appears with a form for selecting the boot type, select “usb+( name of the flash drive)”, press “Enter” and that’s it, this is the simplest option that does not require all sorts of fiddling around in the BIOS.

If suddenly it doesn’t work out, then when loading the ASUS laptop, press the F2 button, after which a window with BIOS settings will open, go to the “boot” tab, select “boot option #1”

and look at what is our priority (usually a HDD hard drive (as in the example), sometimes a CD-DVD-ROM), as we see from the screenshot, in first place (P0:) is the hard drive (Hitachi is a hard drive company disk), on the second (P1:) DVD-ROM, but there is nothing similar to USB, i.e. There are only 2 options in the selection list: hard drive and DVD-ROM. To include the usb option in the list, do the following:

Find below the item “Hard Drive BBS Priorities”,

press the “Enter” button on the keyboard and see a window with a list of options, select USB FLASH DRIVE by pressing the ENTER button,

and we see how USB FLASH DRIVE appeared in first place in BOOT OPTION #1,

As for the HP laptop, when starting the laptop, press and hold the “F10” button, then go to the “System Configuration” menu,

select “Boot Options” and press “Enter”

That's all, now when you boot your laptop, it will boot from your usb port, in other words, if you plug a flash drive into your computer/laptop, it will boot from it, but this is provided that you have previously downloaded the necessary software onto the flash drive - be it installing Windows, all kinds of LiveCDs, boot disks, etc., otherwise nothing will work. Many users believe that they plug in a flash drive, turn on the computer and when the computer starts, the contents of the flash drive will be displayed on the screen, no, this will not happen, the system scans the device that is installed first in the “BIOS”, if there is no installation file there, then it starts scanning device which is listed below, i.e. under the second number, etc.

After you have installed or restored Windows from a flash drive, go to the BIOS again (F2 (ASUS) or F10 (HP) button remember?) and put everything back in the reverse order, i.e. the hard drive is in first place, but you can leave USB in the second place and don’t forget to save it all by pressing the F12 button. And so, as you see, there is nothing difficult to enable usb in the bios of your computer/laptop.

In this article we will figure out how to connect Android to a computer/laptop via USB as a flash drive and be able to transfer information without using a classic flash drive.

This article is suitable for all brands that produce phones on Android 9/8/7/6: Samsung, HTC, Lenovo, LG, Sony, ZTE, Huawei, Meizu, Fly, Alcatel, Xiaomi, Nokia and others. We are not responsible for your actions.

Before Android 4.4 KitKat, it was possible to connect via USB as a flash drive. The PC saw the device as a removable disk and provided the same rights: the user could also perform other actions.

Then, in new versions of Android, the USB mode was replaced by MTP, in which only the data transfer function remained, and the same formatting did not work.

Setting up a USB connection

To manage the connection to a computer via USB, you need. To do this, add the “For Developers” section to the Android settings (if it doesn’t exist):

1. Open settings.
2. Go to the "About phone" or "About device" section.
3. "Build number" or "MIUI version".
4. Press (click) on this item until you see a message that you have become a developer (usually 7-10 clicks are enough).

After the developer section appears in the settings, you can enable USB debugging. The item is called that way, so you just need to move the slider to the “On” position and confirm the resolution.

Now you can connect the device to your computer via USB and select the operating mode. In the latest versions of Android, the most used ones are:

• MTP - transfer any files from computer to phone and vice versa.
• PTP - transfer of photos, as well as transfer of files not supported in MTP mode.
• Charging only.

Connecting in USB storage mode

If you can't get used to using the media player, go back to using USB storage mode. For this you will need:

• USB MASS STORAGE Enabler installed.

Using this method may damage system files. In this case, you will have to reflash Android.

To connect Android to your computer as a drive:

1. Launch USB MASS STORAGE Enabler.
2. Grant superuser rights and agree to change how Selinux works.
3. If the device is supported, the main application menu will open.
4. Click "Enable USB MASS STORAGE".

Now, when connected to a PC, the phone or tablet will appear as a drive. To connect in MTP or PTP mode, just restart the device. Once you're done with mass storage mode, go back into the app and disable USB MASS STORAGE.