PC will not reboot - Power stays on!

[CleanCut]

Last night I was playing a game. The pc locked up and played a high tone thru the speakers. Total lock. No ctrl+alt+delete nothing. Reset button will not work, and on/off key has no affect. Reaching behind the case and turning of the PSU switch obviously finally killed the power. But when I turned it back on the hardrive spun up instantly and the monitor remains black. No keys have any effect, cannot reboot as before. Turned off psu and waited several minutes, turned back on and hd spins up again (hd led on steady). I turned off psu again and went to bed.

Came home tonight and turned psu back on. PC stayed off this time. Hit power button and pc spins up like new. Sooo, as last night I wasn't sure if it was a heating problem (pc been on for a few hours and I'm always thinking it's running too hot), I immediatley fired up the game and she locked up again after 15 in or so.

I figure at this point it can't be heat (PC was only on 15 min and I had played the game a lot longer before, and the game is crashing my box. Prob is, I can't get it to reboot again! Tried shutting off psu for 1-2 hours and as soon as I turn it on hd spins up and no affect from keyboard/tower buttons.

I let the PC sit for a few more hours and still no luck. Cracked the case and removed power to all drives. PC will not even POST. Removed grafix card and tried a different one. Same thing, will not POST, and power switches on tower have no effect. As soon as I put power to the PSU all fans turn on but that's it. Sound like a fried motherboard or CPU??

 

[dchilder]

Could also potentially be the power supply (and that may be the easiest to check). I had a similar problem with mine, and it seemed to fix itself after I went through the trouble of buying a new power supply and hooking it up. When I retried my original one after this, everything was fine. Perhaps even unplugging everything and cleaning everything off could help. Not posting... if it's not the power supply, I would say it sounds like your MB is toast. Good luck.

 

[krmarks]

I agree with dchilder. It could easily have been a heat issue. The cpu might have fried. It takes very few seconds for the cpu to fry if not properly cooled. Did the heatsink have good contact with the cpu? Was the cpu fan on? The connections may have been there for the fan, but I have seen fans not spinning when the connection is still there.

 

[CleanCut]

CPU fan was from AMD. I bought a retail box. Double checked and was fitted perfectly. I have also tried removing VGA and/or mem to see if board would beep:negative. Case is loud, I know I would have heard if the fans stopped. Also tried clearing CMOS. Seems like a lot of people have had similar issues with this board according to amdmb and the newsgroups. Sent for RMA. Just don't know if it's the CPU. I ASSume it's not the PSU as it powers the board fine.

 

[Rav3n]

What board do you have?

Also, a bad PSU can still power things up - but something about the way the current flows may give the pc a bad signal or something - thats what someone once told me. Makes sense.

If you fried your CPU, there is also a small chance that you fried your CPU socket - though I think that chance is much smaller.

You should PROBABLY invest in a better hs/fan combo. Yes, the AMD bundle should be fine especially since AMD bundles it, but it never hurts for a CPU to run a few degrees cooler. It will give you peace of mind if you know your CPU is under a kickass HS/F combo.