System switching off randomly

SiD-P · 24 Nov 2011 at 17:12

This problem started with my system a couple of days ago where the system will just cut out. I then have to power it up a few times for it to boot into windows. A few of the times I have had to reset the BIOS.

No BSOD, just cuts out as if the power has been cut off.

System is currently not overclocked, everything is running @ stock.
What can this problem possibly be?

system specs bellow.

i7 920 (watercooled)
Asus Rampage II Extreme (latest BIOS)
Corsair Dominator RAM (3x2GB & 3x1GB)
GTX 480
Corsair HX1000 PSU
5 assorted HDDs.

SiD-P · 24 Nov 2011 at 17:20

Temps are fine. System is watercooled & hardly ever hitting above 55-60C on Prime Blend test

SiD-P · 24 Nov 2011 at 17:31

Don't think it's anything like that, it was running fine OCed up to 3.8GHz for 3 years until now.

But I will double check

SiD-P · 24 Nov 2011 at 17:49

All seems okay in terms of connection etc.

Could it be the mobo or PSU?

I really hope it's not.

SiD-P · 24 Nov 2011 at 18:44

Did the PSU test & all seems fine with PSU.

SiD-P · 24 Nov 2011 at 22:47

Could the mobo be @ fault?

SiD-P · 25 Nov 2011 at 15:17

Thanks for all the help guys.

The funny thing is sometimes the system will run for hours without any problems.

Will have to wait until Sunday to start testing each part separately.