Motherboard not posting. Help!!

[wessonality]

I had a CPU fan go bad. Before I took off the bad fan/hs, it would boot fine, until it got too hot, of course. I took off the bad hs/fan, cleaned the gunk off of the cpu and put it back on the motherboard with the new hs/fan. Plugged it in and turned it on. All of the fans/hard drives spin up, but no post. No beeps, no video, no nothing. Thinking the CPU might be fried, I dug out an old Duron 850 and tried it. Same result. Fans spin up, but no beeps, no video.

Could the overheating/thermal shutdown of the original processor have killed something else (power supply, motherboard, etc.)? Or was it stupid me who nicked something on the motherboard when detaching the old hs/fan or attaching the new one? My visual inspection came out ok, of course, but some of those SMT resistors are very small and close to the retention clips.

Thx, any help is appreciated.

 

[Harvey]

You have to determine which component(s) failed. First, try unplugging and reseating your RAM, vid card and all other plug in cards and connectors. Next, try clearing the CMOS with the jumper to make sure someting didn't corrupt the settings. Then, if possible, try swapping both CPU's into another motherboard or your motherboard into another case/power supply.

I hope that helps.

 

[skychief]

My first thought was a fried CPU until you said you tried an old Duron and that didn't work either. Dosen't sound like the power supply because everything still works. Does the new CPU fan spin? Could be that you did fry something else on the board or broke one of the resistors near the CPU like you stated. Find a pic of the MB online and closely inspect yours to see if everthing looks like it is in working order. Also, visually inspect "socket" to see if there is any damage or pins remaining. I know it sounds far fetched but I have seen this happen before and yes another CPU was forceably fit on top of it. Finally, as Harvey stated, use trial and error with the compnents to see if they might be bad and reset the CMOS to ruleout any unsuspected changes. I hope you can get it working.