Hi All!

Problem here, hope you guys n gals can help.
I tried overclocking my cpu two days ago. the bios said overclocking failed and the CPU dropped back to it's default clock speed. So far so good. I've used the pc several times since then, all seemed well. Today i turned on my pc, booted into windows and started working then suddenly my system rebooted. Ever since then my PC reboots right after posting. sometimes isee the post screen other times it reboots right before or right after. I was at one point able to get into the BIOS at that pointi reset all settings to Factory Defaults but that did not help. I am wondering is this is b/c of the overclocking or my PSU or Video card happening to go bad conicidentally? Any help would be appreciated.I dont get any post error beeps or messages.

Specs:

Windows 7 Pro
Core 2 Quad Q9550 (had been rma-ed two years ago)
8 GB DDR2 SDRAM
Asus P5QProTurbo