Your question is the reason why you need to start your own thread. If you start your own thread use terms like "data recovery".
Are you are still sorting through this problem? Still sounds like a hardware issue. While shutdown, disconnect all external hardware, except KB, mouse, monitor. Remove any thumb drives, floppy disks, CDs, etc. See if that helps.
If the problem still persists enter the BIOS and Enable "legusy USB devices" and try using straight USB versions of keyboard and mouse.