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HP a402n

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by krd2006 1 view

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I have an HP a402n in which my power switch light on the front was flashing and the green light on the power supply was also flashing and the computer would NOT do anything. I took out the power supply (250) and replaced it with a working one (450). Upon turning the computer on, the power light on the front became a steady light and would not shut off, but the computer still would not come on. After trying different things, the light will now not come on at all, nor the computer still will do nothing....... with a working/tested power supply. Any suggestions on what MAY have happened? or should I just begin the search for a new mobo? Any help would be greatly appreciated!
Thanks a bunch!!

5 replies

by robo_dev

if you replaced the battery and the starter still does not work, then the starter is bad.

I would assume that the MOBO has failed.

But first disconnect all peripherals, remove memory, reseat the processor, clear the cmos, and make sure it's not shorted to the case.

If you've got a naked mobo with no ram and it won't post with a brand new psu, then it's dead.

by Former member

One is big and for the big plug socket on your board then the second cable from the power supply is a small version (4 or 8 pin, depending on your motherboard) of which connects to the other power (small) on your motherboard. These two power ports/connectors on your board are either white or black (also depending on your motherboard). Please check your computer manual for these connections. Also look on the cables to see if one is marked "12 volt" (also depending on your board).

Please post back if you have anymore problems or questions.

by krd2006

Thanks for the info. After I had connected the big plug to the board, and the little plug (4 prong) to the board, when I did turn the computer back on, there was power to it because the once flashing light on the front was no longer flashing. It was a steady light and no computer power and was unable to switch it off, but... the computer was not going. Then after about 5 minutes.... I no longer got ANY light or computer action.
Thanks!!!

by krd2006

Could the battery need replacing possibly? Would something as simple as that cause the computer to get no power and do absolutely NOTHING?? I'm ready to give up!! :-))

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