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Old 07-03-2008, 08:19 AM   #6 (permalink)
vladimirb
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Join Date: Mar 2008
Location: Banja Luka, Bosnia and Herzegovina
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OS: xp pro sp3, Server 2003

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Re: new power supply shuts off after half a second!

Hi mate,
you are right... maybe your old PSU fried something else in your case...
To be sure, open the case, and unplug all necessary components that you do not need to start the PC [optical devices, dial-up modem if you have, HDD, Floppy Disk Drive if you have]... Leave Motherboard, Processor, RAM memory and Graphic card [but you can unplug graphic card too]...
Then try to start your PC... If cooler on processor starts to spin, then you have problem with some component...
Turn back graphic card and see when you start system will you see something on monitor...
Turn back components one-by-one so you can find possible faulty one...

If this does not help,
replace thermal paste on processor, clean dust from heat-sink and clean an entire case from dust with vacuum cleaner or with compressed air...

If all this does not help then I would say it is either processor or Motherboard, but most likely will be Motherboard...
Do this and let us know about progress...
Hope this will help you mate...
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