Is this an indication of a faulty motherboard?

Hey there,

My PC suffered a BSOD yesterday, with an error message containing a "Bad Pool Header".

A hard reset was necessary, afterwhich it would not boot to the POST screen. On switching the PC on, all the fans spin as normal for 2-3 seconds, speed up for a fraction of a second, then the machine resets. A few seconds later the PC reboots itself, and the process repeats - until the power is switched off completely.

I stripped down the PC, removing all unnecessary hardware, testing different memory sticks etc. In every configuration the same problem exists - the PC won't boot to POST - the fans spin as normal, speed up, then resets itself.
Anyone have an idea what is wrong with my machine? Does this sound like a problem with the motherboard, or psu?
System specs:
Mobo - Gigabyte GA-EP35-DS3L
Processor - E6600
RAM - Corsair Dominator
PSU - Arctic 700W

Sounds like PSU to me, but thats just an educated guess. How old is the PSU and what is the brand name of the PSU. I see Arctic above, and if that is a brand name, I'm not familiar with it's quality, as Ive never heard of it. If it is a model name, please post the brand name, so the quality of the PSU may be determined. (ie. there are a bundle of disreputable PSU manufacturers floating around to the point that if you buy one of their PSU's, you are not only probably going to have problems, but literally guaranteed problems. *cough* Logisys *cough*.) Myself, I have learned my lesson the hard way and will NOT buy a PSU but from a few manufacturers such as OCZ, Corsair, Antec, Tagan, Silverstone and a few others.