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Odd Problem PSU maybe ?

A

Art99

n00b
Joined
Mar 13, 2007
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2
Hi I have an athalon xp2100 on a Soyo KTX dragon motherboard I built about 4 years ago. In the last month or so I've had this problem booting up (it does this almost every time) . I push the power switch and the fans go on and then after about 10 seconds it shuts off. If I go into the case and jiggle the wires and cables for awhile it will eventually boot up ok. Once it's booted it runs perfectly.

I've cleaned the case, checked all the cards and ram chips for dirt/corrosion, reset my heatsink with new paste and replaced the hard drives cables and the problem persists. When I can get it running the temperature is fine, the PSU fan is quiet and the PSU case is slightly warm - not hot. I haven't experienced any of the common problems I've read about bad PSU's such as rebooting on it's own. It seems like there
is a bad connection somewhere or perhaps something wrong with the motherboard.maybe.

If anyone has any ideas what might be wrong , PSU or otherwise I'd be very greatful. Thanks for any replies.
 
Pull the mobo molexes & clean the connections on both the cable & mobo, if burned (brown or worse) replace the cable pin.

Nest advice: BUY A NEW PC!

Good Luck,
Dave ;)
 
Thanks Dave. I need more testing but think I traced the problem to the CPU fan wire on my Zalman CPU cooler. In my bios there is a setting to turn on or off the sensor on the MB that detects a CPU fan. If it doesn't detect a CPU fan the PC won't boot because the MB thinks the CPU is too hot even if everything is working properly. I disabled this function and it seems to boot ok so the wire on the cooler has a short or the 3 pin connecter on the MB is the problem I'd guess. Hopefully it's just the wire or the pins on MB need cleaning.
 
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