1.Try going to the Device manager, then going in the option Universal Serial Bus controllers, and select the sub-option USB Root Hub and then go to Actions and click on Uninstall. Now, the USB driver will be uninstalled. To reinstall it, simply restart the computer. Tell me if that helps!
2. Also try to do a clean boot by going to the System Configuration and then go to Services tab, then click Disable all. Now, open the task manager and go to the Startup tab, there also, select the programs and one-by-one Disable them by clicking the Disable button on the bottom right.
After doing these both, if the problem still persists, please tell me.