Question about Dell Dimension 3000 PC Desktop

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Power button flashes yellow and will not power up.

We have just set up my son's computer again. It has been turned off for about 3 weeks. It was working perfectly before but now when we press the power button it flashes yellow and will not power up. It is a Dell Dimension.

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  • Wayne Mineard
    Wayne Mineard May 11, 2010

    Make sure someone has not changed the power select switch on the back to the wrong setting. US-110 EU- 220 If that is OK, make sure the power connectors are seated securely on the motherboard. If that is OK, consider having the power supply looked at. Do you hear any noise, that is fans, beeps, etc?

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  • Dell Master
  • 2,404 Answers

Try a different know good working power supply and only hook up the main power connector to the motherboard as well as the p4 connector. If you get power then you know that the original power supply is bad.

If you try another known good working power supply and you get the same yellow light then the motherboard is bad and would need to be replaced.

Posted on Jun 27, 2009

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