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Question

Help! computer wont stayed powered on!

by SilverShard / September 17, 2011 3:04 AM PDT

So i just got back from a tour in iraq and my desktop stopped working. my family said it broke while i was gone. i came home to inspect it and when you turned on the computer it made a high pitched whineing sound from the power supply. i had a 630 watt raidmax power supply. i knew it was not supposed to whine like that so i took it out and threw it away. went to frys and bought a new 600 watt power supply by corsair. i installed it and turned on the computer and it ran for 3 seconds then shut off. does this everytime i start it! it dosnt make the whining sound anymore so i know the old power supply was bad. but computer still wont start up! i am wondering what the problem could be?

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All Answers

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Answer
You have tripped over a nasty area in the PC world.
by R. Proffitt Forum moderator / September 17, 2011 4:24 AM PDT

No end user diagnostics. While I would have A. Tried the old power supply, B. Always get more Watts in the next PSU and C. Replaced a failing fan, the ONE THING I CRINGE at is your use of the cleaning cloth. The chances it had high electro static potentials means that all bets are off.

Try the old PSU.
Bob

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Answer
Also
by Jimmy Greystone / September 17, 2011 5:57 AM PDT

Also, in addition to what Bob said, the 8xxx series of nVidia cards was problematic to say the least. I know the 8600GT series was affected, but it's possible it was also the 8800 series as well. Might want to look into that. Of course if you pull the video card, and the unit turns on, you have your answer.

And just in general, in cases like this it's best to go to a bare minimum config. So one stick of RAM, CPU, PSU, and that's it. If that works, then you can start adding things back in one by one until you come across the problem component(s). Hopefully you didn't do any permanent damage with that cloth, but who knows. In addition to ESD damage, you could have broken the solder joint on some key component, or even essentially lifted a small resistor or two straight off the board without even knowing it.

Since you live near a Fry's you could optionally take it there and see what kind of diagnosis they give it. Like any place that has it's own techs, it's kind of a crapshoot if you get someone who has any business being within 50ft of a screwdriver, let alone telling you what is or isn't wrong with your computer. Think they charge $70 for a diagnostic fee, so maybe something to keep in mind. Pretty sure Best Buy will do the same thing, but they don't stock the lower level components, such as motherboards, like Fry's does, so if you went to Fry's you could probably talk the manager or someone into waiving the diagnostic fee if you bought a new motherboard and had them put it in, etc. It's an option to consider at the very least.

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Good point about the 8800.
by R. Proffitt Forum moderator / September 17, 2011 6:01 AM PDT
In reply to: Also

These are now starting to fail. The FACT they let the dust build up to the point of disgusting likely accelerated the aging and now death of the machine or parts.
Bob

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