Need new board Striker Extreme Motherboard Bad PCI-E slots X 3

I have an interesting problem and many days later I think i narrowed it down to a bad motherboard. What was happening about 8 weeks after i moved into a new house which later I found out after the problem the whole area is known for dirty power. before you all get on me, I just recently bought an APC, but not till after the fact.

The system would turn click off shortly after i hit the power button like it was a bad power supply, NP I replaced the 1K PSU with an 850K PSU. The system would turn on and after its been on for awhile it would click off. I monitored the temp of the CPU and saw it was running hot, around 60 C. I have had the system for 5 years now so I took the heat seek off and put new thermal paste on, temp runs about 10-15 C cooler now. i took out one video card and tried one at a time and eventually the system would turn off no matter which PCI-E slot it was in. Then I tried to stress the video card some, I ran the ratings test that is on Windows 7 and every time when it starts testing around the direct X stuff the motherboard clicks off. Before I was running XP Pro - 64bit and upgraded to Windows 7 ultimate and same problem with clicking off.

I am thinking maybe the motherboard took a power spike since it was only plugged into a power strip and now the PCI-E slots don't work correctly ?
I replaced the video cards with one nvidia Geforce GTX 550 Ti 1TB , only got one not trying to run SLI right now


My environment from the beginning

ASUS Striker Extreme motherboard - http://www.newegg.com/Product/Product.aspx?Item=N82E168...

Intel Core 2 Quad Q6600 Kentsfield 2.4GHz LGA 775 - http://www.newegg.com/Product/Product.aspx?Item=N82E168...

Crucial Ballistix Tracer 2GB 240-Pin DDR2 SDRAM DDR2 800 (PC2 6400)

2 X ASUS EN8800GTS/HTDP/640M GeForce 8800 GTS 640MB 320-bit GDDR3 PCI Express x16 HDCP - http://www.newegg.com/Product/Product.aspx?Item=N82E168...

Case - COOLER MASTER Stacker 830 Evolution RC-830-SSR3-GP Silver Aluminum ATX Full Tower Computer - http://www.newegg.com/Product/Product.aspx?Item=N82E168...