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My comp turns on for 5seconds and turns off or dosnt turn on at all

Discussion in 'Processors and Motherboards' started by Osiris Oracle, Feb 18, 2008.

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  1. Matthew TechSpot Editor, Community Manager

    Look on the back of the case for a Serial Number and post that please..
  2. whitelatte Newcomer, in training

    i shall leave this to Zenosincks, he should be able to help you further compare to newbies like me. ;P

    good luck on it.
  3. Matthew TechSpot Editor, Community Manager

    Lmao, I'm not exactly an expert on any of this either. I'm learning by the second...
  4. whitelatte Newcomer, in training

    my way of doing is troubleshooting by parts. if you have by any chance a spare PSU you can try that on and you can determine if it's the PSU.
  5. Matthew TechSpot Editor, Community Manager

    Not exactly a reliable method at the present time considering the fact that they don't know what their system requires as far as a PSU goes. Probably a good idea to know what PSU you're putting into your PC ;).
  6. anand1 Newcomer, in training

    It seems as u have said that u have checked your Power Button and working fine. Go for a proper dusting with an Air blower and see if the problem persists or not.

    If it is present then it smells as if the North Bridge Chip of ur MOBO might ge faulty....diagnos ur Mobo with a good technician
  7. Matthew TechSpot Editor, Community Manager

    If what is present? What about this is pointing to the North Bridge out of curiosity?
  8. anand1 Newcomer, in training

    The mobo is divided into North Bridge and South Bridge and there is an individual chip which performs a specific task of it. Like peripheral device contrl. Port controller, power management , Bus controller etc. North Bridge is one of them
  9. Matthew TechSpot Editor, Community Manager

    I am sorry but I'd have to strongly disagree with you anand1. That doesn't seem consistent with the symptoms at all. Rarely do I come across a defective motherboard. Everything Osiris has listed points directly to the PSU. Proprietary PSU's are cheap and unreliable, not to mention the fact that it's a Pentium 4 based system which implies years of use. Furthermore, I suspect a faulty NorthBridge wouldn't cause system fans to spontaneously slow down nor do I suspect it would cause dimming lights :/. On a checklist of potential issues I'd say a defective PSU far exceeds the likelihood of a defective motherboard, not to mention the fact that it's a fraction of the cost and effort to replace!

    After digging around for a while I cannot find any exact information on your motherboard or PSU, Osiris. However, I would be willing to bet (after looking at the rest of your systems components and specs) that your power supply is probably somewhere around 250w, and I'd also be willing to bet that your motherboard requires a 20 pin P1 and likely a P4. With that, I feel confident in suggesting this PSU as a replacement for your stock PSU.

    I could be wrong of course, I am working off of probability here since you haven't posted your Serial Number.
  10. whitelatte Newcomer, in training

    well, PSU is the main suspect here for me too. Very seldom that i heard this caused by motherboard (not like i am saying there is no possibility) :)
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