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why does my pc power up when u plug in the power plug. but when I hit the power button nothing happens

Last response: in Motherboards
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June 10, 2014 1:02:39 PM

I got an Intel dh67bl board with an i3. When I plug in the power cable to my psu the pc powers up like normal. But when I hit the power switch nothing happens.
a b V Motherboard
a b å Intel
June 10, 2014 1:03:06 PM

akhenaten said:
I got an Intel dh67bl board with an i3. When I plug in the power cable to my psu the pc powers up like normal. But when I hit the power switch nothing happens.


Does it turn back off when you hit the button?
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June 10, 2014 1:07:29 PM

Nope not at all. It doesn't respond to the power button.
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a b V Motherboard
a b å Intel
June 10, 2014 1:08:18 PM

akhenaten said:
Nope not at all. It doesn't respond to the power button.


Check inside the case. Are the cables that run from the power button properly put into the motherboard?
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June 10, 2014 1:08:56 PM

There is a bios option to start up when power cord is plugged in. And it's possible that your button is broken / your wires leading from the motherboard to the power switch are damaged / disconnected
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June 10, 2014 1:13:52 PM

I did check the cables the are connected propperly. Didn't check the button but it worked fine before I changed boards. And when I tested the intel it just instantly powered up without a button on bridging it on the pins. Funny thing is the reset button responds normal. But It doesn't want to power up via a button. I'm out of options.
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a b V Motherboard
June 10, 2014 1:18:20 PM

What if you press the power button and hold it for 10 seconds?

If it turns off, the power switch may be configured wrong.. there's an option in the Control Panel / Power Options to configure what the power button does when you press it.. it can either go to sleep, go to standby, shut down or do nothing. This should not affect the computer when Windows isn't even loaded, but it just may affect it if you use sleep mode instead of shutting the computer down.

What you describe (powering up as you connect AC) can also happen if the PSU is damaged.
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June 10, 2014 1:22:35 PM

Yes when I connect power to the psu. And nothing happens when I keep it for 10 seconds. It just stays on.
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June 10, 2014 1:22:42 PM

THe power button or the wires might be damaged. If you can, test it with a multimeter for continuity when you press the switch, but for the mean time you can kludge it by moving the reset button headers to the power, and try to set the BIOS to reset on a momentary press, and a soft-off after a press and hold.
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June 10, 2014 1:26:08 PM

Will do so. Kinda tired now but gonna try it asap in the morning. Thanks a lot everyone!
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a b V Motherboard
June 10, 2014 1:33:24 PM

Could have thye pin-out reversed on the Power Switch header. Some are polarity sensitive and do not work when reversed.

Powering on when AC power is connected could just be the default ACPI power state set in BIOS.
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June 10, 2014 2:15:29 PM

Got it fixed guys. Thanks a lot I appreciate it
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June 10, 2014 3:06:52 PM

you can get a cheap momentary switch from radio shack and it'll serve as a start button if you think yours is toast.
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!