A driver required for your device is not installed.
Unknown devices remain after reinstalling Windows.
Check your hardware ID and PC model in device properties.
If it is checked and resolved from above, you do not need to proceed to the next step.
Unknown devices remain after reinstalling Windows.
Difficulty Easy · Estimated time 5 minutes
Check points: Record the error code, when it occurred, and any recent changes.
A driver required for your device is not installed.
Difficulty Moderate · Estimated time 10~30 minutes
Check points: Make sure the unknown device is renamed to the correct name.
When troubleshooting USB devices not being recognized, it's important to rule out the causes one at a time. Based on the “USB not recognized” symptom, check the port/cable problem and USB driver, then proceed to the next step. Cross-test devices, cables, and USB ports and check for power management and driver issues.
If you are experiencing the “screen suddenly goes black” symptoms, possible causes include a graphics driver crash or display output change. First check if Windows is running, then check the output mode and graphics driver in that order.
Content review date: 2026-10-07