I have been trying to overclocking my q8400, i got to 8400, but when i push it farther than 3.06 windows will not boot.
I'm running windows 7 pro and my mobo is an ASUS P5N-D.
Its posts just fine when i had it a 3.2 ghz, but windows refused to boot.
That's good to here. Taking it further than 3.2ghz requires a step up on the vcore voltage. Of course it all depends on the Motherboard's chipset and ram. Had mine @ 3.2ghz, all setting to auto. My board is asus P5Q SE Plus 8gb 800mhz ddr2