How To: Understood USB Connection is Problem

1. Click Start.

2. Right- Click My Computer > Manager. 

3. Select  Device Manager, from the navigation tab on the left.

4. Double- Click Universal Serial Bus Controllers.

5. Just See Which Device showing Yellow Sign. Then you understand this device some problem. How solution this problem see below.

 

6. Right- Click this device. Then click Uninstall, and Restart your PC.