Could My Motherboard Keep Causing My PSU To Fail?

Phantom Liberty

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Feb 21, 2014
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A few months ago my PSU (Corsair GS800w Bronze) of only a few months had started to fail. It would shut down unexpectedly either every 5 minutes or every 10 seconds or not even start at all for a while. I came to the conclusion that it was my PSU that was failing and got it replaced. I had received my replacement (which worked perfectly) a few days before christmas. Now this PSU is starting to do the same thing. Now that this has happened twice within just a few months it made me realize that something else could be causing it. Maybe the motherboard? I always use a good surge protector and I have even moved since getting the replacement so I don't think it could be the house's fault. Is there any way I could check to see if there is something wrong with my motherboard (ASUS Z77 Sabertooth) My PSU is powerful enough to support my rig which consists of 1 7200RPM HD, 1 CD Drive, Phanteks CPU Air Cooler, Dual GPU's (EVGA GTX 680 no OC) processor (i5 3570k @ 4.5 ghz), and the 4-8 non power sucking USB devices.

tl;dr

My replacement PSU is failing just like my old PSU that failed just within a few months of eachother. Could this be the motherboard's fault and how could I check? I know the PSU is toast so I'll have to RMA that anyway but there's gotta be something else that's causing it.