Question about Dell Dimension 5100 (D51L1) PC Desktop

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Dell dimension power supply / motherboard

We had a power outage today and even with a good surge protector my PC now will not start. The green LED is on when the unit is pluged in but it will not fire up. I have 5volts on 2 wires going to motherboard, I have no power at the on/off button on the front of the PC. Question is: How do I know if my power supply is bad or the motherboard? Can anyone help?

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  • kristech Sep 13, 2008

    I have had the power supply in and out of the machine several times, I have reseated all possible connection cables and still nothing.



    Just trying to figure out which part is faulty without taking the whole thing into the shop.

  • car111a Mar 03, 2009

    I'm having the same problem due to a power outtage from the winter storm yesterday. Have you found a solution to your problem, if so can you please reply back to me with the solution.

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It was the power supply unit.

Posted on Sep 16, 2008

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You may consider reseating the P1 and P2 cables (from the power supply) connected to the motherboard.


you can go to www.support.dell.com and enter the service tag of your dell system (found at the back of your system) and look for the manual on how to add/remove the parts of the computer.

thanks.

Posted on Sep 13, 2008

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