[David_G17]

I had the same problem you're experiencing, and after pulling out the CPU (and bending the pins while doing so...grrrr), and reinserting it and replacing the cpu/heatsink paste, everything worked.

YMMV.

eta: i don't know why it worked after that, but it did.

 

[doktarZues]

I've seen EVERYTHING cause the problem you're describing. Bad ram, bad video card, bad CPU, bad motherboard. Replace parts 1 at a time with known good until you find the problem, stopping at the CPU. If no luck, replace parts 2 at a time with known good, stopping at CPU. If you get to 3 and still no good, very likely it's your CPU and a good chance also your motherboard. It seems to me in most cases the cpu goes bad it likes to also damage the motherboard.

Replace with known working, keep receipts for everything and ask about their return policy, keep everything nice and neat, don't rip the bags unless you have to, etc.

If I had to guess, based on what you've already done, I'd say the MB is shot. The only thing I've seen fry a CPU is lightning, or it overheats from being improperly pasted/mounted to the heatsink in which case you'd smell the burning. I've seen way more MBs crap than CPUs. Good luck, let us know how it turns out. -dok

 

[malkore]

onboard video is probably disabled in BIOS because you had a card installed.

if the video card fan won't spin, it coulda taken a serious jolt of power when the power supply croaked.

got a friend's PC you can test your card in? or an older card that'll fit the slot, just to test?

and no system beeps?