try going there, check to see if you have the latest drivers for your motherboard.
You can also check in the BIOS itself, there is a section on 'waking from sleep mode'-I checked off 'use space-bar' to wake from sleep.
I found when my computer 'Turns off the display' when my monitor is connected with a DVI cable I can't get it to wake up out of the off mode using the mouse. The only thing I could find is pressing Ctrl+alt+del wakes it up, displaying the normal Ctrl+alt+del selection screen. If I use a VGA-DVI cable (DVI at monitor) to the same monitor it wakes up without this problem. Anyone seen this before?
I am using on-board graphics.
Mother Board is ASUS M3A78-EM