I have an ATX style computer(Tatun-no name to me), 333 Mhz Cyrix processor that does not turn on. When turned on, nothings happens with the power supply fan nor the CPU fan. As of this morning, I have replaced the power supply (250 watt), the power switch on the case, and the wire that goes to the motherboard, I checked and double checked to make sure the voltage settings were correct. I have even removed the motherboard out of the case and worked on it on a wood table. When I did, I noticed there were no washers between the motherboard and the screws. The board was on top of metal. Could the board be shorted out? My friend purchased this no name computer from a store that has since gone out of business so I am trying to help her out. She's had this computer since 1999 and she did mention to me that a month after she got it she had to take it back because it wouldn't come on. They supposedly fixed it, but who ever did should have known better about putting the board on top of metal. Any thoughts on what could be the problem or suggestions would be appreciated. Thanks http://www.PCGuide.com/ubb/frown.gif

Hi,

It depends on if there is any circuitry on the bottom of the motherboard that touched the metal when installed. Newer boards don't have that problem because manufacturers have finally wized up and don't do that anymore.

If the circuitry was touching the metal, it's a real good chance that the motherboard is fried.

Hang tight for some more opinions.

Big Blue 66


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This space reserved for highly intelligent observations and witty remarks.

Has this machine been working since they fixed it and just gone down?
If so, what was going on just before this started again?
This may sound stupid, but, are you sure there is power at the outlet?
How about changing the power cord? I have one that will not work on one machine but will on another.
Keep trying http://www.PCGuide.com/ubb/cool.gif

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Quotes from "Lifes Little Instruction Book" by H.Jackson Brown: 409)Wage war against littering! Frank's Place (http://www.members.aol.com/frankscompsrvice)

To be honest, I don't really have too many details. I was trying to help out a friend to lives in another part of the state. I think her computer hasn't been used in a while-she works alot. I know for sure there is power at the outlet I was using in my home and yes I did replace the power cord-NADA!!!!!


Originally posted by bassman:
Has this machine been working since they fixed it and just gone down?
If so, what was going on just before this started again?
This may sound stupid, but, are you sure there is power at the outlet?
How about changing the power cord? I have one that will not work on one machine but will on another.
Keep trying http://www.PCGuide.com/ubb/cool.gif

If the new power supply's fan is also not running, then jump its green(power on) wire and a black(ground) wire. If the PS fan runs, then the MB is bad. If the PS fan does not run, then check the house and surge suppressor circuitry for a bad ground.

NEWBRIT :Unless you have a good deal of electrical experience...DON'T TRY "JUMPING" wiring on your computer. It is a GREAT way to get a good shock unless you are experienced . The one thing I caught in your posts is that the unit is not in front of you.....how do you know the person put the correct wire from the on/off button[switch] on the correct posts on the mobo? I've seen this happen many times....check everything and find out you didnt have the on/off wire on the right mobo posts.

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XP didn't save Me !

Randy,
I'm the one who replaced the on/off switch on the computer case. It's correct.

A much easier and safer way to check you power supply is to go to a PC store like COMPUSA ( or something similar where you're from 0 and get a nifty little gadget that plugs into the PS and gives you a green light for " good " and a no light at all if it's down.

Here's what i'm talking about, COMPUSA ATX PS tester (http://www.compusa.com/products/product_info.asp?product_code=285473), works great and irecommend everyone keep one in their tool kit.



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iisbob

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