Question about Dell Dimension 2400 PC Desktop

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When i push the power button nothing happens

I let my dad take it apart and rebuild It so he could learn how but when he put it back together. I tried to start it up and nothing happened I've check and cross checked the connections everything's hooked up. And the mother board light comes on when I hook up the power supply. if you could help I would be greatful

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  • 461 Answers

It could just be that the power switch is not connected to the motherboard properly.

Posted on May 28, 2014


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Posted on Jan 02, 2017

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SOURCE: Dell Dimension 4600C will not power up

Sounds like the power supply is faulting. If not it is your mother board that has failed.

Posted on Mar 07, 2008

  • 156 Answers

SOURCE: Not the power supply!


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 -
System Lights -

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


Posted on May 07, 2008

  • 9 Answers

SOURCE: DELL DImension does not boot

Posted on Sep 26, 2008

  • 17 Answers

SOURCE: computer will not turn on at all. Dell Dimension 5100 desktop

I would unplug the power supply from the motherboard, wait a little while and then plug it back in.
Try to power everything back up and it should come up.

I am assuming you are getting a light on the motherboard that indicates power is being supplied?

Posted on Feb 15, 2009

  • 1015 Answers

SOURCE: Will not power up

try re-setting the BIOS by using the clear CMOS jumper on the motherboard. If that does not work then remove the memory dimms, cd-rom drive, hard drive, floppy drive and any PCI components. After that try the computer and see if you at least get a post-up screen. If you do then re-connect each component until the post up screen stops again and that is your problem component. If not then your motherboard is bad.

Posted on Sep 23, 2009

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