Question about Dell Dimension 5100 (D51L1) PC Desktop

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Power problem on 5100

One of my kids powered off my Dell 5100 at the mains and it now ont power on. The green LED is lit on the motherboard. I followed the troubleshooting on the Del web site to no avail, so I suspect that the power off damaged the power supply - can you help

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  • rot1107 Aug 08, 2008

    I have a similiar problem. I push the power button and nothing happpens but sometime in the next 3 minutes to 3 days the computer will power up on it's own. I replaced the power supply, the power cord and the cmos battery. Same problem. I followed the Dell trouble shooting of removing all components one by one, then trying to power up but no change.

  • dillontl Sep 01, 2008

    Sounds familiar. Replaced surge protector strip and power supply cord to computer. Still unable to power up. Green light on motherboard works. Just a little over 3 years old and out of warranty.

  • Ian Crawford Sep 02, 2008

    Same as the other two - out of warranty 6 weeks ago, stopped working after 2 power cuts in the house. Did all the Dell fault analysis, the Dell technician says it's the motherboard needs eplacing! She didn't mention the power supply of surge strip (where is that?). Looking at a big bill frm Dell to return and repair.

  • Anonymous Jan 02, 2009

    I just burned out my third motherboard. I'm going to buy a different brand.

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  • 2,785 Answers

Plz check with another power supply or power cord

Posted on Jul 28, 2008

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Has anyone solved the not starting issue for dell 5100?


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It seems that your SMPS power supply may be having some fault...try to replace it...

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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.

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Most likely the power supply have failed. Although the system is getting some power to the Motherboard (Flea power indication on motherboard) there are at least 5 different voltages the power supply provides for the system. Losing any one can cause a no power situation like you describe.

A standard ATX power supply should resolve (It is the 1st item I'd replace, both because it is the 1st point of failure and the cheapest to replace)

Here is one ATX power supply:

http://www.newegg.com/Product/Product.aspx?Item=N82E16817182030

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1 Answer

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is ram pushed in good cpu setted well video cards pshued in tight power pushed in good main one plus 12 v atx power ? 4 pin

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Try removing the ram and place it back in, If that does not work your power supply has a short in it..Replace it

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