Windows 8 USB ports have stopped functioning.

Question

I have a Envy 1534 desktop and after taking an update to windows 8 today my keyboard and mouse no longer function past the boot system. When windows loads the keyboard goes dark and I cannot use any of the USB ports on my system. This renders the system completely useless. I have tried to go back to an earlier system point however apparently the update was already installing because as soon as i reboot it immediately reinstalls its self before i can stop it. I have not been able to access the safe mode and the refresh function fails because the "drive with my OS on it is Locked". This issue has been solved elsewhere by changing the USB mode in your bios however HP does not allow access to these bios functions. At this point I am at a loss as i cannot access windows at all, and the restore functions seem to be non functional.

Answer 1

Hi,
If you run into a "locked HD" situation then you will have to clear the CMOS to get the PC back to the default BIOS setting in case secure boot was enabled.
Boot up a Windows 7 or 8 installation CD and go to the command console and get MSCONFIG launched.  At that point you should be able to set the boot to safe mode for the C partition on the hard drive.  I just tried this process recently and it worked for me. 
HP DV9700, t9300, Nvidia 8600, 4GB, Crucial C300 128GB SSD
HP Photosmart Premium C309G, HP Photosmart 6520
HP Touchpad, HP Chromebook 11
Custom i7-4770k,Z-87, 8GB, Vertex 3 SSD, Samsung EVO SSD, Corsair HX650,GTX 760
Custom i7-4790k,Z-97, 16GB, Vertex 3 SSD, Plextor M.2 SSD, Samsung EVO SSD, Corsair HX650, GTX 660TI
Windows 7/8 UEFI/Legacy mode, MBR/GPT