Problem with HP desktop power button

Hewlett-packard Pavilion 754n desktop
June 16, 2010 at 23:25:28
Specs: Windows xp, 3.06 GHz Pentium 4 HT processor
my desktop wont turn on at all i click on the power botton and it wont turn on. i even replace the power supply box and nothing. can anyone help me to find the problem

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#1
June 17, 2010 at 00:56:27
Check the power button - trace the leads to the motherboard,
remove the connector and short the 2 pins together - if the pc
starts then you need to replace the switch.

"I've always been mad, I know I've been mad, like the most of us..."


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#2
June 17, 2010 at 01:57:49
HI there,

Please check the power cable and then replace the cell ( battery) located on your motherboard.

Best of luck

Imran Khan

http://www.laptop-accessories4u.co.uk


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#3
June 17, 2010 at 20:22:39
What happened to it between the last time it worked OK and the first time it didn't?

You're not really green until you're soylent green.


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#4
June 19, 2010 at 00:02:35
lastime it was working iperfect it was good then it started to have trouble to turn it on so we did a disc recovery and it didnt work so then i realized that every time we wanted to use it we had to weggle the power cord so i replaced it and it was the same then i replaced the whole power box and it got better for about 3 month and then it wont turn on amymore.

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#5
June 19, 2010 at 15:15:21
You replaced the power supply 3 months ago and just replaced it again or you replaced it once 3 months ago and are still using that one?

If it is the power button you can open the case and follow the 2 wires that go from the button to the motherboard. Then remove that 2-wire connection from the motherboard pins. Then with the power cord attached as with normal operation, take something like a metal screwdriver and carefully touch those 2 pins together for a second. If the PC starts up then likely the power button is the problem. If not, it's something else.

If it doesn't start up, try temporarily removing all the cards except video and disconnect all the drives. Then try starting it again. If it starts up then one of the removed or disconnected items is at fault.

If it still doesn't work you're pretty much left with the power supply or motherboard. Often a power supply will fail and ruin the motherboard as well. If you're using a brand new power supply then the motherboard is likely bad. If you're still using the one you replaced 3 months ago then it could be the power supply, motherboard or both that are bad.

You're not really green until you're soylent green.


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