You have likely fried the processor as any incorrect seating of the HSF on the chip will burn it quickly.
Did you replace apply new thermal paste after you cleaned the old paste off the chip and heatsink?
ECS k7s5a V1.0 motherboard and Athlon Thunderbird CPU with Award Bios 2.0. PC2100 memory 2 x 128. I have a debugging question.
I moved my computer to a new location so I thought I would vacumn out the dust. In so doing I removed my Heat sink and fan off the cpu. I put everything back in place and powered it up. As it was going through the post/pre-boot it shut itself down. In opening it back up I discovered the heatsink was not properly seated (my fault). I reset it and buttoned everything back up. Now it will not go into the post/pre-boot and just blinks the CDROM, and the hard drive led on the case blinks.
So far I have replaced the Power supply with the same results. I've also disconnected all boards but the video card and the floppy with the same result, it never gets to access to setup.
I would like to trouble shoot it a little more before giving up on the mobo (since its getting power) or the CPU. I suspect I cracked the MOBO as there is no evidence of a short or tell tale smell.
Anything I can try short of replacing the motherboard and cpu and memory in that order?