Windows could not verify the digital signature of the device driver.
The device gets blocked after installing outdated or unofficial drivers.
Check the driver download source and supported OS.
If it is checked and resolved from above, you do not need to proceed to the next step.
The device gets blocked after installing outdated or unofficial drivers.
Difficulty Easy · Estimated time 5 minutes
Check points: Record the error code, when it occurred, and any recent changes.
Windows could not verify the digital signature of the device driver.
Difficulty Moderate · Estimated time 10~30 minutes
Check points: Check if the signature error disappears and the device starts.
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