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Computer doesnt turn on

Last response: in Components
November 26, 2012 7:34:50 PM

my hp pavillion desktop 6720f, has a wierd problem.

Powersupply turns off immediately when I press the start button.

If I remove the PSU521 cable from the powersupply.. all the fans run.. but the computer doesnt turn on..

with psu521 cable in, no fans turn on..

Can some one help me .

More about : computer doesnt turn

a b ) Power supply
November 26, 2012 7:44:06 PM

What exactly is this PSU521 cable? It would be best if you can describe how the cable looks. In addition, people I have met with a similar problem have found their motherboard to be at fault.

Edit: Also give this a intensive/thorough read