Laptop USB Port Not Recognizing Devices
4.5
You plug in a mouse or drive, but the computer doesn't react at all.
Symptoms
- No "ding" sound
- Device not in Explorer
- No power to device
Possible Causes
- Dirty port
- Disabled in BIOS
- Driver conflict
Step-by-Step Fix
1
Check for Physical Debris
Use a non-conductive pick to remove lint from the USB port.
2
Update USB Root Hub Driver
Device Manager > Universal Serial Bus controllers > Update Driver.
3
Power Cycle Laptop
Shut down, unplug everything, and hold power for 30 seconds to clear static.
When to See a Technician
If one port works and another doesn't, it's likely a physical hardware failure on the motherboard.
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