Question about Dell Dimension 5100 (D51L1) PC Desktop

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Not the power supply!

I tried my power supply in another computer and it worked fine.I have a green light on my mother board and I poped the watch battery out and it reads 3.2v dc and seems to be fine.What is your guess to why my computer wont power up and yes I double checked all the connections "Everywhere".lol

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Hi

To help troubleshoot a problem, Dell Dimension 5100 has four diagnostic lights labeled "1," "2," "3," "4" on the front panel. When the computer starts normally, the lights flash. After the computer starts, all four lights lites solid green. The power button also lites solid green. If the computer malfunctions, the color and sequence of the diagnostic lights as well as the power button helps identifies the problem.

First, disconnect the power cord and remove all connections (Keyboard, Network, Mouse etc) as well as optional PCI Cards. Connect up the power cord (Monitor as well) and try powering the PC.
Check the diagnostic lights/system lights color and sequence and check the link below for more info (Assuming you have another system that can access internet)
Diagnostic Lights - http://support.dell.com/support/edocs/systems/dim5100/en/sm/tshoot1.htm#wp1120147
System Lights - http://support.dell.com/support/edocs/systems/dim5100/en/sm/tshoot1.htm#wp1114432

Reply with lights color and sequence as well as any beep codes and I will respond at best effort.

Mike

Posted on May 07, 2008

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NO LIGHT MEANS NO POWER OUTPUT AND THAT INDICATES THE POWER SUPPLY IS NOT FUNCTIONING AND NEEDS REPLACED.

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To jumper the power supply use a section of wire or a bread twisty (with the insulation removed from the ends) and just connect the green wire to any black wire on the 20 / 24 pin power connector. Make sure that the power switch on the back of the power supply is switched on.

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