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[SOLVED] Dell Dimension 5100 Wont Start Up

This is a discussion on [SOLVED] Dell Dimension 5100 Wont Start Up within the Motherboards, Bios & CPU forums, part of the Tech Support Forum category. I have the very same issue with my Dell Dimension 5100. It just won't power up. It does not turn


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Old 10-16-2010, 12:10 PM   #1
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I have the very same issue with my Dell Dimension 5100. It just won't power up.

It does not turn on when power button pressed. No beeps, lights or fans, the only sign of power is the green LED on the motherboard.

I replaced the power switch (with USB and audio sockets) on the front of the computer, but this didn't work. I am trying to get hold of another PSU to test.

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Old 10-16-2010, 12:15 PM   #2
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and welcome to the Forum

I moved your post to a separate thread since it was attached to an older thread.

You can test the Power Supply: http://www.techsupportforum.com/f210...er-151526.html

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Old 10-16-2010, 01:47 PM   #3
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Trying a known working PSU would be a good place to start.
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Old 10-19-2010, 04:31 AM   #4
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Thanks,

I tested the PSU over the weekend and it works fine (using paper clip trick), looks like the motherboard is blown.


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Old 10-19-2010, 06:41 AM   #5
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The PSU could still be an issue. It can run on it's own but not have enough power to run the hardware. Remove ALL the RAM and try to boot. If the Mobo is good you should get a constant series of beeps.
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Old 10-20-2010, 02:33 AM   #6
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I tried that, I removed everything including PCI and PCI-X cards, plus the RAM. No beeps nothing. I also replaced the front power button panel, and that didn't help.

Getting a spare PSU later next week and will try it out and report back. Hopefully it is just the PSU.
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Old 10-20-2010, 06:22 AM   #7
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If you have a Mobo speaker and you do NOT get a constant beep with NO RAM installed the problem may be the Mobo.
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Old 11-03-2010, 11:10 AM   #8
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Update. I got a Dell PSU (had to pay a bit extra for one to fit case) but all working now.

So it was the PSU all along, even though the LED light on the motherboard was on, the PSU had failed.

New PSU in and system back working again.

So if you have a Dell 5100 and it won't power on, and the green LED on the motherboard is on, that doesn't mean the PSU is ok, it could be dead.

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