My friend needed to print something so I gave him my flash drive to transfer the files to me so that I could print them. As soon as he plugged the flash drive into his computer, his USB mouse and USB keyboard stopped working. The problem is not intermittent like most problems of this type that I read about.
We restarted his computer several times using the main power button since we had no other way, and it still doesn't work. We don't believe that the ports are broken because the light on the wired mouse still turns on. Also, the keyboard works in the BIOS, just not in Windows 8. We also tried moving the devices around to different ports but no luck.
Nothing is wrong with the flash drive as far as I can tell. In fact, it was completely empty and I had just formatted to FAT days before. The flash drive works fine on my laptops (Windows 8 and Linux Mint 17).
Ordinarily I would blame the USB drivers and say that we should reinstall them but we can't even log into his Windows install at this point.
Does anyone have any idea what could have caused this and what we can do about it?