I've pulled the HD and run CHKDSK from another computer. HD seems fine, no bad sectors or errors.
Could be a faulty power button? Bad memory?
When the power button is pressed, unit LEDs light up and HD begins to spin, then within 5 seconds computer shuts down.
This happens on AC power, on battery, and on AC with battery removed.
Edited by Mark Meriaux, 11 November 2010 - 10:49 PM.