In order to determine that this is not a software related problem, you can try to boot the system on safe mode and the check if the system keeps rebooting.
It is also possible that a particular device is preventing the system from working . For testing purposes, please uninstall all devices except for the CPU, minimum amount of system memory and the video card. If the issue is resolved, then proceed to add one device at a time with subsequent reboots to determine, which device is causing the problem.
You can also try to test different memory on the desktop board, for more information on the supported memory check the following URL:
I made these tests below:
Checked with safe mode.
Checked with minimum memori (Corsair 1X1GB 1333, in all memori slots)
Checked with another memori (transend 2X2GB,1333 and 1X1GB,1333)
Checked with another hard disk.
I removed all connections from motherboard and again connected and check.
I removed cmos battery after one hour i kept it and checked.
graphic card i changed to secondary slot and checked.
I checked power with UPS and without UPS.
Still i couldn't find the problem.
Put a volt meter on a 12 volt line and watch the meter when your machine restarts and see if you get a volt drop right before the restart??
I connected UPS to 1kv stabilizer and checked.Still getting same problem. If its voltage problem after connecting stabilizer it should get solved right.
Pls, can you tell me where i have to check with volt meter, From smps or in main power connection.
Black wire ground (earth ) Yellow wire 12 volts red wire 5.5 volts .
Today i called electresion and checked with volt meter. Its coming one volt up and down always. that too not before restarting. He is telling its fine.
A good PSU , 80 Plus CERT. sholud stay with in 0.2 volts under load . Do you have another PSU that you can try on your sys?? I think you have found the problem .This why most of the high end sys use a PSU thats Silver or gold Certified.