So my computer had a Windows update and blue screened furring game play. Not a big deal because I overclock and have had this happen before. When I restarted the computer I get to windows lock screen but non of my USB ports are working. So I have no use of keyboard or mouse. I can access bios and even the safe boot options untill it comes back to the lock screen. With no keyboard I can unlock the PC.... I've tried everything I know of including clear CMOS. I've reset, restored, and everyone I can think I've but still loose keyboard/mouse as soon as I get to lock screen. I'm at a lose and need some help...