Question for you guys,

Recently got an upgrade for my computer:

-Intel E6600
-ASUS P5B Deluxe (upgraded to the latest BIOS)
-Super Talent 2GB DDR2 800Mhz 4-4-3-8 (2x1GB)
-Hyper Type R 580W PSU
-Gigabyte GV-NX76T256D-RH (Nvidia GeForce 7600GT)

The first P5B Deluxe I had was v1.10G and as I was slowly overclocking it to test it, I got up to 3.2Ghz (400Mhz x 8.0) and the motherboard crapped out - smelled burning plastic, and when I turned it back on it would power on for a second, then turn back off, turn back on and then sit there but I didn't see any video or get any beep codes.

So I RMA'ed it to newegg and got a second board, this time it was v1.03G. Same damn problem happened! Except this time no smell of burning plastic and I can't find anything physically wrong with the board.

I'm not 100% sure that this board is bad, so rather than do another RMA, I was hoping maybe someone had an idea of what might be wrong? I unplugged everything from the system, right now I just have 1 stick of RAM in the system - tried multiple memory slots, CPU, and the video card plugged in. Tried resetting the BIOS of course, pulled the battery, switched the jumper..

I tried unplugging everything but the power and just powering on the motherboard - I heard that resets it to the factory defaults? After I did this though the system doesn't do the power up once, turn off and power back on. It just powers up and never POSTS, no beep codes, nothin ...

Anyone have any ideas other than trying to RMA and get another board (I think if I go for another board it won't be an ASUS one this time around though!).