Quote Originally Posted by mbox_bob View Post
For your quick diagnosis of the mouse not working but the keyboard does, does the keyboard actually respond (hard to tell with no display)? To test I verify whether Numlock turns on/off, or Scroll lock if you have one? These two keys are good indicators because they wont turn on/off the indicator lights for the functions if the computer is locked.
Another thing, I notice you have an ASUS mainboard. A quick google indicates that when the PLL Overvoltage is enabled (a CPU setting) in the BIOS/UEFI for ASUS boards, it is a common problem that the monitor wont wake from sleep, although this is usually when the computer is in a sleep state too. Might be worth testing.
Thanks bob.

Ok, I will remember to check the scroll lock when it happens again and hunt down those stable drivers. I won't worry aboutt the sleep angle right now because it has happened twice while I was using the computer. Maybe tomorrow!

Fingers crossed...