Fixing my USB ports/drivers

I got a virus using a friends flashdisk in my USB. Since, my USB ports don't work. My mouse doesn't move the cursor but the lights come on. Tried it on another pc and it works fine. Now it doesnt recognise my flashdisk.

I've rolled back drivers, deleted and reinstalled etc, but they still dont work. Device Manager says they are working fine. The mouse doesnt have software. Any ideas?

try repairing windows put the os disk in just like new install after you hit f8 hit repair instead of format should fix problem