Bug check at spontaneous reboot +++RESOLVED+++ RESOLVED: Saggy power supply. Would appreciate it if someone could interpret this one. See attachment. It results from occasional (once a week) reboots when awakening from sleep mode. Memory and drive both test OK. RAM chips (two 512s) have been transposed with one another and contacts have been cleaned. Boards have been reseated and case is dust free. Pagefile has been rebuilt. Chkdsk /f /r and scanreg.now have been run. W7 O/S has been rebuilt - clean install from the ground up. (All updates have been UNinstalled, as a test.) Asus P5P800 w/1Gb ram P4 @ 3.0Ghz CPU temp 57 c / 134 f MB temp 30 c / 86 f 12v bus averages 11.8 All fans running normally I am out of ideas. Works flawlessly but for this. Thanks.