Question about Dell Dimension 5100 (D51L1) PC Desktop

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Dell dimension 5100 won't power on

There is power to the power supply, tested it to be sure, and there is a green light on the motherboard that turns on, but the cpu will not power on when the button is pushed. reset the ram, disconnected the cards, removed the battery, and still nothing. any thoughts? hoping for not a dying/dead mobo :)

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  • walshcode Nov 26, 2007

    I have the same probelm. The green light on the mother board is on, but the computer wont' power up.

  • Anonymous Mar 04, 2009

    I have the same problem. Please advice.

  • don6 Mar 14, 2009

    My problem is that even though the light is green, the computer tries to power on in short bursts. The front light will come on for a split second, the fans will spin for a second, and then it will do it again a couple seconds later. it goes like this until I unplug it. I have already changed the mobo and disconnected all the power hog devices inside.

  • don6 Mar 14, 2009

    My problem is that even though the light is green, the computer tries to power on in short bursts. The front light will come on for a split second, the fans will spin for a second, and then it will do it again a couple seconds later. it goes like this until I unplug it. I have already changed the mobo and disconnected all the power hog devices inside.

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Might be a problem with the power button...try exchanging the power adapter and the reset adapter in your motherboard...this would become:

RESET BUTTON: as power button.

view your manual on where to find this adapters in your board.

Posted on Nov 19, 2007

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I changed the power supply and problem resolved

Posted on Dec 09, 2007

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I had the same problem with the same symptoms. Had it taken to a professional and found out it was in fact a faulty power supply. Good luck.

Posted on Dec 03, 2007

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Before commencing, what color is the power light on the case? If it is flashing amber, you're looking at PS or MoBo Issues. If the light is off, power button. If the light is on green, then probably MoBo.

Posted on Dec 10, 2007

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Posted on Jan 02, 2017

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SOURCE: Dell Dimension 5100 - CPU & Motherboard/System Temperature

u can also look rhe temperatures in bios under pc healt

Posted on Dec 26, 2008

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