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My cpu wont turn on. light flashes then goes right out

Used computer one nite w/o problems and the next morning nothing

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  • max carson
    max carson Dec 05, 2012

    Let us know how it goes. Did you "Jiggle" the cord/charger and the AC jack plug, it may be a bad connection and I just like to say "JIGGLE".

  • max carson
    max carson Dec 05, 2012

    I thought this was a laptop. It's a desktop a Compaq SR5254 , right? You have a few miles on it right? That changes things the first thing that comes to mind is the PSU. Also It's hard to tell from the pics I found of the Mobo, there may be a power fuse on the board, replace if blown, ALSO change the CMOS battery, while your in there. I had a old HP Compaq SR1120 and the PSU went out. It would try to start and in a few seconds would shut down, again and again. Here is a power troubleshooting procedure : A power Supply Unit is a easy fix and not that expensive..

  • Judy Griffith Dec 05, 2012

    yes it is a desktop,being new to the site i must have clicked on the wrong thing.Thanks 4 your input.I'll drop some of these terms when i take it 4 service so i don't look like a mark! :)

  • max carson
    max carson Dec 05, 2012

    Replacing a PSU is easy, My replacement was less that $50.00 and one hour of my time.



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Have you tried without battery? Different cord/charger? That's sort of what happens , "one day your here, the next day your gone". Without knowing the age of the machine, it's difficult to say. Machines break. If you have a multimeter you can troubleshoot the circuit, if not, it may need a ride to a Qualified Computer Tech.

Posted on Dec 05, 2012

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You may need to get your PCs motherboard checked.

Posted on Dec 05, 2012


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Posted on Jan 02, 2017

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Im sorry to inform you that the motherboard on your computer needs to be replaced. If the ac adapter light turns on if not plugged into the system and when you do plug it in, it dims or flashes, that's a right out symptom that the motherboard needs to be replaced. Do you still have warranty for that system? if you do, call Dell Tech Support and have them replace it. If the warranty is already expired, please call Dell at 1-800-2884410 for an estimate on how much it would cost you to have the motherboard replaced. Usually would be around $400 - $500 and 5-8 business days. Unfortunately, you have to ship the system back to Dell for that repair.

Hope you find this solution helpful and informative.


Karlox™ :)

Posted on Jul 29, 2008

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