Laptop USB port not working
4.5
The USB ports on the laptop do not recognize any connected devices.
Symptoms
- Device not detected
- No power to USB
- Intermittent connection
Possible Causes
- Driver corruption
- Physical port damage
- Power management settings
Step-by-Step Fix
1
Check in Device Manager
Look for yellow exclamation marks under "Universal Serial Bus controllers".
2
Disable USB Selective Suspend
Go to Power Options > Change plan settings > Advanced power settings.
3
Inspect Port Pins
Ensure no pins are bent or touching each other inside the port.
When to See a Technician
If one port works but others don't, it's likely a physical hardware failure on that specific port.
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