Solve : PC power half on, wont boot up, power supply? hard drive??

1.	Solve : PC power half on, wont boot up, power supply? hard drive??
Answer» The Gateway desktop GT4016 was hard to power up, had to play with it awhile, finally it quit, the power will turn on with fan, but the BLUE light on the switch WONT turn on & link to the monitor. Before this happened, I would unplug it from the back many times, & eventually get it to turn on. Before this happened the Lite-on DRIVE would not play any cd I placed in the tray, no action. What do you think, a bad relay in the power supply, or a bad hard drive? Sounds like it could be one or the other...or both... For the PSU test SWAP a known good one in of the same or greater wattage...you'll know overnite... For the HDD DLoad and run the Free diags. from the manuf. site....run the long test.

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