How to fix USB not found in windows xp, vista,7 and 8

  how to Fix USB not found 

1. Install USB driver [if need].
2. Open Device Manager. Locate Devices by Type.
3. To open Device Manager, either run Devmgmt.msc at a command prompt, or follow these steps:
4. Click Start, right-click My Computer, and then click Manage.
5. Expand System Tools, click Device Manager, and then click Devices by type on the View menu.
6. Right-click USB 2.0 EHCI Host controller, and then click Update Driver.
7. 
   
8. You can find the USB Host controller entry in either of the following locations:
9. Universal Serial Bus Controllers.
10. Other Devices