Question about Compaq Evo D500 PC Desktop

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My Compaq evo d500 has a problem of starting up. When i try to press the start button, it doesn't switch on, though i just bought another power supply two months ago, after the one i bought it with broke down. Again the two green indicator LED bulbs in the mother board get lit when i switch on the main power supply, but the computer is not working. Where is the problem, please help.

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  • joecoolvette
    joecoolvette Jun 04, 2010

    Have you bypassed the Power On switch, to see if the SWITCH may be the problem?

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  • 551 Answers

Try to examine you motherboard. is there a capacitors that blow up? if there is, those capacitors are the problem. you have to take that out or let a technician do it. then change it with the same specifications.

Posted on Jun 04, 2010

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Does not power on


Try a different power-supply.
It's possible for your power-supply to have "died".

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It seems to be BIOS password, if you don't remember or don't have the BIOS password you have to reset the password by opening your CPU cover and removing the CMOS coin battery, this will reset the BIOS password but dont forget to return back the battery and start using your PC.

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When I press the power switch, the green light comes on for about 2 seconds then it starts flashing red.


I'm afraid you need a new Power Supplies Unit. Just try an old trick first. Remove power cord from the back of PC. Press power button and keep it pressed for good 30 seconds. Then reconnect power cord and try to start as normal. If this don't work I'm afraid your PSU is dead. Good Luck

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look on ebay for used compaq power supplies.

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Try to start your EVO desktop in safe mode (press F8) before Windows loads.

Other things to try are a different graphics card or monitor.

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