PC trouble shooting suggestions?

Post #366,421 by hnick 11/17/12 12:09:24 PM Reply	PC trouble shooting suggestions? I have been trying to fix a PC that belongs to the village. After our recent power outage it wouldn't power up. Sometimes it would try for a few seconds and stop or more often just sit there. It had a 350 watt ATX power supply in it and the 3.3v tested low to non-existent. I replaced it with a similar unit which tests good. It was a simple R&R; I only had to remove the CPU heat sink to get the old unit out and the new unit in. The heat sink is the older model that have the 4 clips on the bottom and two levers on the top. Now I get green lights on the motherboard but it doesn't even try to power up. Any suggestions on what I look at next? Thanks, Hugh
Post #366,424 by Another Scott 11/17/12 12:25:31 PM Reply	Sometimes they act weird when the CMOS battery dies. If the PS has had issues for a while, the battery may be dead too. That can sometimes cause weird problems. Can you short the "clear BIOS" jumper and/or replace the button battery? The battery is often a 2032 (20 mm diameter, ~ 3.2V). (If it had to do with the heat sink, I would think that you would have some time before the CPU got too hot and shut down, so I don't think that's the main problem.) HTH a little. Good luck! Cheers, Scott.
Post #366,428 by drook 11/17/12 1:03:16 PM Reply	Larger caliber? -- Drew
Post #366,493 by scoenye 11/18/12 8:53:44 PM Reply	Pull all boards and connectors Start with just the mobo and power it up. If that does not produce some kind of beeping complaint, the board and/or the CPU are done. (Did you replace the thermal grease/pad before replacing the heatsink? If not, you can try that and see if it brings the CPU back, but it may be too late.) If you got beeps: add the video card. Continue by adding the RAM back in, one stick at a time. Test all the slots. After that, add any remaining boards, one at a time. Lastly, reconnect the drives, also one at a time.

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