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Old 08-19-2010, 12:23 AM   #1
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Default Computer won't turn on (follow up of Computer turns on automatically?)

Okay, so on my other thread, my brothers computer wouldn't shut down.

Anyways, I tried various things, and never found out why. So I decided to go back to the cause of it. I plugged in the Mic and Headphone jack (what caused this problem), and it shuts the computer down. Curious, I decided to pull the power out, and put it back in a while later back, and back to the same problem. Then I put the headphone and mic back in, and now the computer won't turn on.

I tried leaving the power unplugged, and plugged it back in. I still can't power it on. However, the ethernet light is always on when it has power. The light goes out when I plug in the mic and headphone.

The motherboard has an "HD_AUDIO", and I plugged the "HD_AUDIO" connector on it. Can the "HD_AUDIO" somehow killed something, and be the reason why it won't turn on?

Any suggestion on what to do?
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Old 08-19-2010, 12:27 AM   #2
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Default Re: Computer won't turn on (follow up of Computer turns on automatically?)

Ive heard of some people unplugging a flash drive, and short circuiting the motherboard. But never have I heard this. If your lights still come on, there is hope. All I would do is pull the CPU out for like 5 minutes, then put it back in. Make sure you unplug the computer first though.
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Old 08-19-2010, 01:00 AM   #3
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Default Re: Computer won't turn on (follow up of Computer turns on automatically?)

The headphone/speaker could be shorting. This (short circuiting) can sometimes throw off an entire rig.

Have you tried a hard BIOS reset - pulling the CMOS battery for ~10 mins?
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Old 08-19-2010, 03:33 AM   #4
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Default Re: Computer won't turn on (follow up of Computer turns on automatically?)

What make and model is the motherboard?
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Old 08-19-2010, 11:47 AM   #5
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Default Re: Computer won't turn on (follow up of Computer turns on automatically?)

Unplug the power cord.
Hold the power button for 15 seconds.
Plug the power cord back in.

Give it a go.
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Old 08-19-2010, 04:29 PM   #6
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Default Re: Computer won't turn on (follow up of Computer turns on automatically?)

Quote:
Originally Posted by Everendless View Post
Ive heard of some people unplugging a flash drive, and short circuiting the motherboard. But never have I heard this. If your lights still come on, there is hope. All I would do is pull the CPU out for like 5 minutes, then put it back in. Make sure you unplug the computer first though.
I will try this Later.

Quote:
Originally Posted by Grantofhell View Post
The headphone/speaker could be shorting. This (short circuiting) can sometimes throw off an entire rig.

Have you tried a hard BIOS reset - pulling the CMOS battery for ~10 mins?
Tried it multiple times, didn't work.

Quote:
Originally Posted by Remeniz View Post
What make and model is the motherboard?
I think it's the ECS MCP61PM-HM
Came from this computer.


Quote:
Originally Posted by Anderwolfe View Post
Unplug the power cord.
Hold the power button for 15 seconds.
Plug the power cord back in.

Give it a go.
Tried it, didn't work.
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Old 08-19-2010, 05:02 PM   #7
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Default Re: Computer won't turn on (follow up of Computer turns on automatically?)

Have you tried literally pulling everything (aside from the CPU / power!) from the motherboard and then checking whether it powers on?

The power supply is the other possible culprit here - can you swap it out with another to check it?
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Old 08-19-2010, 05:17 PM   #8
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Default Re: Computer won't turn on (follow up of Computer turns on automatically?)

I took the motherboard out, and put it into another case and PSU. The things connected to the motherboard was the CPU and RAM.
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Old 08-19-2010, 05:58 PM   #9
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Default Re: Computer won't turn on (follow up of Computer turns on automatically?)

Have a look at the motherboard and check it for bulging capacitors.
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Old 08-19-2010, 06:24 PM   #10
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Default Re: Computer won't turn on (follow up of Computer turns on automatically?)

All the capacitors look normal to me.
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