What is USB-DEVICE-NOT-RECOGNIZED?
USB Device Not Recognized is a medium-severity Windows operating system issue. Windows shows the 'USB Device Not Recognized' notification and the device is not functional. Typical causes include USB port providing insufficient power and USB root hub driver error. The steps below are ordered to resolve this efficiently.
Common Causes
- Corrupted USB descriptor on the device
- USB port providing insufficient power
- USB root hub driver error
Step-by-Step Fix Guide
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1
Connect to a rear USB port directly on the motherboard
"Connect to a rear USB port directly on the motherboard" targets USB port providing insufficient power, one of the documented causes of USB-DEVICE-NOT-RECOGNIZED.
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2
Uninstall USB controllers in Device Manager and reboot
If earlier steps didn't help, "Uninstall USB controllers in Device Manager and reboot" directly addresses corrupted USB descriptor on the device.
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3
Try a different USB cable
"Try a different USB cable" is the next step worth ruling out for USB-DEVICE-NOT-RECOGNIZED.
Commands & Diagnostics
devmgmt.msc
msdt.exe /id DeviceDiagnostic
Frequently Asked Questions
In most cases, corrupted USB descriptor on the device is behind USB-DEVICE-NOT-RECOGNIZED. USB port providing insufficient power and USB root hub driver error can trigger it too.
Most USB-DEVICE-NOT-RECOGNIZED reports resolve after "Connect to a rear USB port directly on the motherboard". The rest of the guide above is there for the cases that don't.
As a medium-severity issue, USB-DEVICE-NOT-RECOGNIZED is more of a stability annoyance than a hardware risk — the steps above should clear it up.
Usually. USB-DEVICE-NOT-RECOGNIZED is fixable with the steps above; a full Windows reinstall is rarely necessary unless everything else has failed.
Sometimes. Microsoft regularly releases patches that fix known BSOD triggers including USB-DEVICE-NOT-RECOGNIZED. Make sure Windows is fully up to date via Settings → Windows Update before attempting more advanced fixes.
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