Dell Deminsion E521 wont start up

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Dell Deminsion E521 wont start up

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As the title says.  When I power the unit up it lights up but get nothing on either of my 2 screens.  Mouse powers up but keyboard wont ( press cpas lock or number lock and the respective lights wont lightup)  the digonostic numbers in the front 1,2 and 3 lights up.  Have unpluged the unit, check plugs, wires ect on the outside.  Nothing seems to be damaged or plugged in wrong.  NOthing shows up on my displays. Not the usuall Dell with the load bar, no windows loading screen, nada.  Thanks for any help.

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  • Etvin 

    Is the power button LED, solid green, blinking green, solid amber, blinking amber?

    The e521 Diagnostic Codes and Troubleshooter is HERE.

    1,2,3 diagnostic lights indicate 'Another Failure has occured' error.

    If you are comfortable around computers, you could try the following to test the power supply.

    Unplug the cord from the power supply, hold the power button in for about 15/20 seconds, open the case, unplug the 24-pin power connector from the motherboard and jump the Green wire to one of the Black wires, reconnect the power cord and power the system on and if power supply fan and hard drive run, then the PSU should be good.

    Note: Do not remove any wires from the plug, use a small piece of wire or a paper clip as a jumper.

    Power supply checks out and the system still does not work, again remove the power cord, hold power button in for several seconds to discharge the residue power, reconnect the 24-pin connector to the motherboard.

    Remove all the PCI cards, the video card [if applicable], memory, all peripherals, disconnect the data and power cables to all the drives, check that the front panel cable is connected to motherboard, with nothing else connected to the system, reconnect the power cable and power the system on.

    If there's no change in the diagnostic lights and you do not hear any beep sequence, then it would appear that the motherboard has died.

    Bev.

     

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