In this article, we are going to see about How to fix laptop USB not working problem
How to fix laptop USB not working
Firstly check for drivers installed on the operating system.
Secondly, check for the physical connector for the USB port whether is broken or damaged, or both.
Thirdly, Check whether 5 volts coming on pin no. 1 of the port or not.
Fourthly, check whether the coil giving signal volts at pin numbers 2nd and 3rd.
Finally, if everything else fails replace PCH.
USB 2 pinouts
| No | Name | Description |
|---|---|---|
| 1 | VBUS | Red |
| 2 | D- | White |
| 3 | D+ | Green |
| 4 | GND | Black |
| Shell | Shield | Connector Shell |
USB 3 pinouts
| No | Name | Description |
|---|---|---|
| 1 | VBUS | Red |
| 2 | D- | White |
| 3 | D+ | Green |
| 4 | GND | Black |
| 5 | SHA_SSRX | Blue |
| 6 | SHA_SSRX+ | Yellow |
| 7 | GND_DRAIN | GROUND |
| 8 | SHA_SSRX- | Purple |
| 9 | SHA_SSRX+ | Orange |
| Shell | Shield | Connector Shell |
The laptop repairing help guide gives you insights and a complete guide on repairing information for laptops.