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  #1  
Old December 15th, 2006, 11:05 AM
richard_83 richard_83 is offline
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Pc problem
need help abt the following symptoms of my comp


when i
- press power-on switch on front of PC case
- system switches on ( fans run), led on the motherboard is on, led on keyboard is on, optical mouse on.
but monitor isnt getting any power nor are the optiacal drives.

- switch off PC by holding down front power switch - motherboard light goes off

- switch back on - motherboard light comes on

- leave it on.
- after 10-30 min, the pc springs to life without any one even touching it.

experiencing it fr over a week now.

the pc also shuts down citing thermal overheat...
but the fans( 2) are working fine and the case is also open.

would really appreciate somebody helping me find the solution to the problem.
richie
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  #2  
Old December 16th, 2006, 12:17 PM
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Quote:
Originally Posted by richard_83
the pc also shuts down citing thermal overheat...
but the fans( 2) are working fine and the case is also open.


Did you build the PC yourself? If so, did you remember to apply thermal paste/grease?
Liam.
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  #3  
Old December 17th, 2006, 04:07 PM
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Double check that all your components are seated correctly. However, it sounds like a failing mobo to me.
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  #4  
Old December 18th, 2006, 10:18 AM
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Hi Richard and welcome to Dev Shed.

It could be a few things causing your problems.


Could you post your system specs please to give us a better idea of your situation.

Thanks.
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Old December 22nd, 2006, 03:49 AM
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Working fans might just mean they're shoving air against densely impacted dust bunnies wedged in the heat sink(s) fins ;->

If the inside of the thing looks like the Sahara desert get all that crud blown out and cleaned off. A lot of dust is semi-conductive and can cause all sorts of problems.

Heh, the old 386 IBM PS/2 Model 80 had problems like this. Dust tended to heavily collect up near the FDD controller on the mobo and the things would stop working. Blow the dust off, and they worked again.
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Old December 24th, 2006, 06:34 AM
richard_83 richard_83 is offline
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thank you for the suggestions
the latest development is tht, the pc is completely shut down now. doesn't spring to life ever.
the specs as requested are.
intel pentium IV 2.4 ghz
intel 845gvsr chipset
256 mb ddr ram
disk drives 2

no external add-ons.
the comp has worked fr over 2 years perfectly fine and now this.
'm trying to contact intel for a replacement or servicing, but they ain't responding thro th mail either.
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Old December 24th, 2006, 11:47 AM
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Sounds like a failed motherboard and PSU.
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Old December 26th, 2006, 02:35 AM
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First, ensure the switch isn't busted. Some are pure crap these days (e-Machine for example)

Find the set of leads from the switch on the front panel that run down to the mobo. Pull that connector off and short the pins momentarily with a small screwdriver blade. If that still doesn't do anything, then its not a bum switch.
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