On some computers, when you connect a hard drive or USB 3.0 flash drive, the error “Device not recognized " (USB Device Not Recognized) or " Windows has stopped this device because it reported a problem.(Code 43)"in device manager.
In this article, you will find instructions on how to fix the following problems:
- USB device not recognized / not detected
- USB 3.0 flash drive not recognized / not detected
- USB 3.0 does not work on Windows 7/10
How to fix: USB 3.0 port not working on computer
Before we move on to troubleshoot this issue, you should try the following:
- Use a different USB cable if you are connecting the hard drive to a USB 3.0 port on your computer.
- Connect USB 3.0 to USB 2.0 port.
- Remove the USB device, shut down the computer, and unplug the power cord (or battery if using a laptop). Wait at least 2 minutes and then plug the power cord back in. Turn on your computer and reconnect your USB device.
- If you are using Windows 7, Vista, or XP, download and run the Microsoft Troubleshooter utility.
- Reset BIOS to factory settings.
Solution 1. Disable Fast Startup feature in Windows 8 and 10
Note: If the quick start option was already unchecked, check it and restart your computer. After restarting, uncheck the box and restart your computer again.
- Reboot computer.
Solution 2: Disable USB suspend settings.
Solution 3. Restart your USB 3.0 device.
- Open up device Manager... For this:
- Press the keys " Windows» + « R"To open the" Run ".
- In the window " Execute»Enter: devmgmt.msc.
- Click on Enter.
2. In Device Manager, expand "ControllersUSB» .
3. Right-click on “ RootUSB-concentrator (USB 3.0 ) "And select" Delete".
4. Windows will automatically find and install the latest drivers for your USB 3.0 port. 
Solution 4. Install the latest USB 3.0 drivers.
- Download Intel Driver Update Utility or AMD drivers.
- Run driver update utility and press " Further" on the first screen.
- Accept the license terms and click “ Install".
- Wait while the driver update utility is installed.
- After the installation is complete, click " Run».
- Click " Start Scan ".
- When the driver scan is complete, click " Download", to download the latest drivers for your computer.
- Finally, click on " Install".
- After the installation is complete reboot computer.
Solution 5. Restore Windows to a previous working state
If the solutions above did not help with the problem when USB 3.0 does not work on the computer, you should try to restore the computer to a previous working state. This can be done if you have previously activated the Windows restore point.
Please write in the comments below if you managed to solve the problem with the faulty USB 3.0 port, and what solution helped in your situation.
This article focuses on how to enable USB support in the BIOS. As it turns out, not all users know that the Universal Serial Bus functions (in the Russian interpretation - "Universal Serial Bus") can be enabled and configured via BIOS Setup. We will not focus on the circumstances due to which you may need this operation - they may be different. For example, you find that USB devices on your computer are running slower than they should, and you want to check if your computer's BIOS supports the latest version of this bus standard.
To get started, enter BIOS Setup when you boot your computer and laptop. A separate article on our website has been devoted to how to do this. It should be noted, however, that the BIOS section with USB functions is not always striking for the user. In addition, for different BIOS manufacturers in different versions of the bus control functions can be placed in different sections. These can be Advanced, Integrated Peripherals, Onboard Devices, etc.
It may, of course, happen that there is simply no section for configuring USB functions in the BIOS of your laptop or desktop computer. This situation can most often occur in laptops, in which the number of options available to the user is generally not very large. In the BIOS of my HP netbook, for example, I did not find such an option, no matter how I looked. Well, that means it's not destiny ...
Setting USB options in BIOS
The number and set of USB functions that you can adjust in the BIOS can also vary greatly depending on the version. Often in Setup, you can install support for USB mouse and keyboard attached to external drives. You can also disable / enable the ability to connect USB devices altogether or enable support for a separate version, for example, USB 2.0.
A list of the most common USB options (they may have different names in different BIOS versions):
- USB Function - enable / disable the Universal Serial Bus controller
- USB 2.0 Controller Mode - switch the USB 2.0 controller to 1.1 mode and vice versa
- Assign IRQ For USB - assigns IRQ to USB devices
- USB Speed - set the speed of the USB bus
- - USB keyboard and mouse support
- USB Storage Support - support for external drives on this bus
- Emulation Type - set emulation modes for USB drives
After setting the option you want, do not forget to save it by selecting the BIOS Setup "Exit and Save Changes" option to restart the computer.
However, when setting USB parameters in the BIOS, remember that incorrect setting may result in the inoperability of any devices permanently connected to the universal serial bus, such as a keyboard or mouse.
Conclusion
In this article, you learned how you can enable USB support, as well as set USB options in the BIOS of a computer or laptop. As a rule, this operation is quite simple and does not take much of your time.
You can enable USB ports on your laptop through BIOS, Device Manager, Registry Editor, or Group Policy Editor. If access to the YUSB connectors was deliberately prohibited using special software, then you can unblock it in the program where the interface is locked. All methods are available to ordinary users and do not require special training.
Disconnecting unnecessary devices
If the USB ports suddenly stopped working, and you are now looking for how to turn them on, then the first thing to do is to see if there is a lot of the device connected to the laptop. When using a USB hub, the laptop may not be able to provide power to all devices, causing the USB connectors to stop responding. Disconnect any unnecessary hardware from the laptop and check to see if the ports work before performing the USB BIOS setup. If nothing has changed, then restart the laptop and enter the BIOS.
Enabling ports in BIOS
To enter BIOS at boot, press Delete, F2, or another key depending on your motherboard model. You can see it on the start screen. 
In the case of a laptop, this screen does not appear because the fastboot function is activated. You can temporarily disable this technology in the power supply parameters:
Reboot your computer. Without quick start, you will see all the stages of Windows boot and will be able to get into the BIOS. If this does not work on Windows 8 or 10 with UEFI BIOS, try the following method:
After rebooting, select Diagnostics, then go to Advanced Options and open the UEFI Firmware Options. Click "Restart", the next start will bring up the BIOS UEFI interface.
To configure USB ports in UEFI, go to the "Peripherals" tab and set the "Legacy USB Support" parameter to "Enabled". If you need support for USB 3.0 ports, please activate the corresponding item (USB 3.0 Support). 
In the AMI BIOS, go to the "Integrated Peripherals" section and set the "Enabled" value for the four options:
- USB EHCI Controller.
- USB Mouse Support.
- USB Keyboard Support.
- Legacy USB Storage Detect.
In Phoenix AwardBIOS, go to the “Advanced” tab and go to the “USB configuration” section. All parameters inside must be set to "Enabled" for the YUSB ports to work. 
In all BIOS versions, to save the configuration, press the F10 key and confirm the selection by writing "Y".
Windows setup
If ports are enabled in the BIOS, but USB devices are not detected by the system, then check the Registry Editor, Device Manager, and Group Policy Editor. Perhaps, through them, changes were made to the system, due to which the ports are now not working. You should start with the Registry Editor.
If USB is enabled in Registry Editor, check the controller drivers in Device Manager.
If you see an exclamation mark icon next to the controller, and you are sure that the interface is supported in the registry editor, then this means that there are problems with the drivers. Try updating your software first:
If updating the controller software doesn't help, update your motherboard driver. Download it from the manufacturer's website and install it manually. Another way to update the drivers for all controllers at once is to remove them from the system. Right click on the controllers and choose Delete. After rebooting, the system will automatically install the controller drivers, so you no longer have to think about how to enable USB ports - they will work anyway. 
If only removable devices connected via USB do not work, then check in the Group Policy Editor if the read block is set.
Find the Removable Devices: Disable Read option and set it to Disable. The problem with identifying flash drives and external drives should disappear.
Hardware damage to ports
If the laptop has damaged USB ports or the south bridge on the motherboard, then no method will help to enable the interface. Therefore, if the connectors stopped working after mechanical stress, liquid entering the case, short circuit or other negative factors, then you should take the laptop to the service for diagnostics. 
In the case of the system unit, some USB ports can be replaced independently, but in a laptop there is no such possibility, because all the connectors are soldered to the motherboard.
USB ports may stop functioning if drivers have failed, BIOS settings or connectors have received mechanical damage. The second case is often found among owners of a recently purchased or assembled computer, as well as those who decided to install an additional USB port in the motherboard or those who have previously reset the BIOS settings.
BIOS is subdivided into several versions and developers, therefore, in each of them the interface may differ significantly, but the functionality for the most part remains the same.
Option 1: Award BIOS
It is the most common developer of basic I / O systems with a standard interface. The instruction for it looks like this:
Option 2: Phoenix-Award & AMI BIOS
BIOS versions from such developers as Phoenix-Award and AMI have similar functionality, so they will be considered in the same version. The instructions for configuring USB ports in this case looks like this:
Option 3: UEFI interface
UEFI is a more modern analogue of BIOS with a graphical interface and the ability to control using a mouse, but in general, their functionality is very similar. The instruction for UEFI will look like this:
Connecting USB ports will not be difficult, regardless of the BIOS version. Once connected, you can connect a USB mouse and keyboard to your computer. If they were connected before, then their work will become more stable.
