The problem is my pc is auto-restarting 2-3 seconds upon power button, it will restart doing nothing and restarting even in bios. if I'm lucky and proceed to boot up successfully, it can run up like 3 days long without restarting. my PC can run for days. but if you turn it off, it'll have the problem again which is auto restart within 2-3 sec. troubleshoots : Clean format(windows 7) breadboarding replaced PSU 3 times replaced cmos battery removed the rams then put it back memtest disabled auto restart on system failure(computer>right click>advance system settings) Bios Update Specs : h61m-ds2 r3 Gigagbyte board 4g x 2 Kingston ram Intel i3 1155 500gb hitachi + 320gb WD HDD Palit GT 730 generic 600w PSU cooler master CPU fan cpu temp 50~60 degree max. as per my research regarding this problem, It leads to one problem : MOTHERBOARD NOT REGULATING POWER TO CPU. is it? I need your opinion and feedback guys! I don't know where to run to. Thanks!