custom-built PC power button not working

Micro-star international / X58m
August 11, 2010 at 00:41:37
Specs: Windows 7
I recently built a new computer and the power button doesn't seem to power it up. I can reboot and shut it down, but I cannot power it up without opening the case up and turning it on manually with the motherboard power button.

I have checked and checked again to make sure that the pins are correct on the Mobo to no avail. Any help would be appreciated...


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#1
August 11, 2010 at 00:51:03
Start by seeing if it will power up when you short the power button pins on the motherboard with a screwdriver or whatever. If it powers up then the problem is with the power 'switch' on the case - these are usually cheap make/break contact affairs & often the mountings fail. You can swap them with the reset button if there is one.

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


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#2
August 11, 2010 at 13:25:00
There is no button as the reset button is tied into the power button. The power is the only thing that doesn't work. Reboot/Shut-off works.

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#3
August 11, 2010 at 15:01:21
Do as johnr has suggested. This will tell you if there is something wrong with the motherboard or if it is just the case switch. If you have an Ohm meter you can check continuity on the case switch by removing both leads from the board and connecting them to the Ohm meter. Then press and hold the switch. It could show continuity.

Verify you have the two leads connected to the Power switch pins. Order doesn't matter on those 2 pins.


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Related Solutions

#4
August 11, 2010 at 15:39:31
I'll try flipping them around and see if it works. I don't have a meter, therefore I cannot test.

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#5
August 11, 2010 at 16:50:46
If you can start the computer by temporarily shorting out the two pins on the motherboard marked power switch and the computer starts then there is something wrong with the switch circuit. If the computer won't start that way then there is something wrong with the board.


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