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Fix USB Device Not Recognized in Windows

If you getting the error “USB device not recognized” when you plug in some USB device onto your computer USB ports, it’s not a tragedy, or at least should not be :)
When your computer stop recognizing your USB devices you will still have power on that port so you can still charge your mobile phone or any other device that can be charged via USB.

Usb Device NOT recognized
You can initiate the USB device using the Windows Device Manager. Follow these easy steps to do that:
1. Start -> Run and type Devmgmt.msc, click OK (or Start and right click on Computer, select Manage) .
2. Select your computer from the list.
3. In the Action menu, select the Scan for the hardware changes option. Now your computer should recognize the previously unrecognized USB devices.

If this method didn’t worked, try the following:

1. Start -> Run and type Devmgmt.msc, click OK (or Start and right click on Computer, select Manage) .
2. Expand Universal Serial Bus controllers selection.
3. Select the USB Root Hub from the list, right click on it and select Properties .
4. On the newly opened window (USB Root Hub Properties) select Power Management tab.
5. Clear the check box Allow the computer to turn off this device to save power, and press OK.
6. Repeat the above described steps for each USB Root Hub from your computer list.
7. In the Action menu, select the Scan for the hardware changes option. Now your computer should recognize the previously unrecognized USB devices.

Unknown USB Device

If any of the above methods doesn’t resolve the issue, try the last one, unplug your computer from the power supply. This should be done because sometimes the motherboard needs to be rebooted and the standard values to be loaded again from your motherboard bios. When the computer reboot the motherboard loads again all the drivers and your USB ports should be recognized again.

5 Comments

  1. I did as you instructed but nothing happened. I connected the flash drive to another computer and it works fine, however, it has stopped working on my PC & I need to find another way to resolve this issue. If u have any other ideas please foward to my email. Thank U.

    Efrain

  2. Hi,

    Thank you very much for your help. I did as you mentioned above and it worked.

    Regards,
    Raji

  3. its working,thank you very much !

  4. Efrain, it sounds to me like you may have a bad USB port. What happens if you plug it into a different slot?

    Margret

  5. I didn’t detect my drive.I tried on bios also its still same.

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