Hp p6000 desktop not starting power supply...?

I have a solid green light on the power supply but the fan does not come on. (nothing but the green light comes on) The start up button flickers briefly when pressed but only after being unplugged and only once until it is unplugged again. I have gone though the hp trouble shooting page. Any help would be greatly appreciated.

As you did not define the model number (just a reference to the HP p6000 series) I had to guess it was the stock 300W used in several of the models.
It the green light is 'on' with applied voltage, but goes out when the computers power switch is depressed, that usually means the power supply has failed. Open the case, and repeat the sequence, noting the PSU light, motherboard LED, and watch the CPU fan. Now, press the computer power switch. Did the CPU fan turn briefly? If the CPU fan quit, and the motherboard LED is now off, I again would suspect the PSU.
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ThinkPads: S30, T43, X60t, X1, W700ds, IdeaPad Y710, IdeaCentre: A300, IdeaPad K1
Mark Hopkins
Program Manager, Lenovo Social Media (Services)
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Hp p6000 desktop not starting power supply...?

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