Question about Dell Dimension 9200 PC Desktop

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My Dell Dimension begins to boot then sits there as if asleep

My Dell Dimension begins to boot then sits there with the power button light flashing on and off slowly and nothing displayed on the screen. If I press the button once it starts to flash faster and then reverts to a slower flash.
If I try to kill it by holding the power button in for about 5 seconds, it tries to power up automatically a second later and for a while it was turning itself on and off for a few seconds repeatedly - weird! If I leave it flashing for a while before I kill it, sometimes I can start it. Once booted up into Windows it is fine. Sometimes it gets as far as starting to load windows before going blank with a flashing power button again.
Any clues?

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It sounds like it's probably the power supply. Computers require more power to boot up than they do to keep running, so if it's fine once it gets going, the power supply may just be dying. If you have a multimeter and know what you're doing, you can test the power supply connectors to see if any of them (especially the ones leading to the motherboard) are not giving the proper voltages.

How old is the computer?

Posted on May 28, 2010

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