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Working computer today, dead computer tomorrow

Last response: in Motherboards
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May 11, 2013 9:32:10 AM

I have successfully built my new computer for $1000 and it was all working for 2 weeks. I go to bed wake up the next morning and my power button on the front of the case doesn't work, so I have to open my case then turn it on through the motherboard. I had this problem before where the case power connectors didn't work when I plugged it in Com 1 in the motherboard so I used Com 2. So the next day nothing turned on at all, the case power button or the motherboard.

Can someone please help me is this common, is the motherboard or PSU faulty?

I really had no problems at all and I am really upset that I spent this much money and my computer won't work
a b V Motherboard
May 11, 2013 9:37:35 AM

try using the reset button instead, to rule out the switch/cable hopefully.

by this i mean, connect the reset pin of the case to the power pins of the mobo
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a c 116 V Motherboard
May 11, 2013 9:41:26 AM

+1 the dude above me.

dare i ask... what is the psu/mb you're using?
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May 11, 2013 9:46:03 AM

I tried that but still nothing even the mobo reset button won't change anything
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May 11, 2013 9:48:15 AM

ingtar33 said:
+1 the dude above me.

dare i ask... what is the psu/mb you're using?


Seasonic M12II 620 bronze

Asrock Z77 extreme4

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a c 127 V Motherboard
May 11, 2013 9:52:59 AM

If the power button on the motherboard works and the case button doesnt, and another(the reset switch) also doesn't work I would say its the motherboard. I highly doubt its the power supply. But another possibility is the buttons on the case are bad(both of them) to rule this out simply use a screw driver to short the to pins where the power switch plugs in. If it starts its the buttons if it doesn't its the motherboard.
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Best solution

a c 116 V Motherboard
May 11, 2013 9:58:07 AM

mmm... the psu and mb are both solid. your problem is behaving like a "short" somewhere in the system. take the motherboard out of the case and check the back of the board for burn marks or dirt. make sure there isn't anything metal behind the motherboard like a screw or something.

manually test the psu... to make sure the psu works. (if you aren't comfortable working with electricity, use a 2nd psu to see if the system will start)

If both of these draw a blank, wash down your mb. The dark board will make stains hard to see, and a lot of cases have open venting in the top. its not hard to imagine liquid getting on the motherboard. Use some q-tips and 90% rubbing alcohol to clean the motherboard from one corner to the other.

If none of these work, we'll assume the problem isn't psu/mb related for a moment (it still can be mb related but we need to be certain). Pull out the gpu and use the onboard video. a dead video card can stop a computer from posting (believe me on this one, it can happen, particularly if there is a short).

if nothing has worked, at this point you're gonna have to assume either 1) the motherboard is broke. or 2) the cpu is broke.

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May 11, 2013 10:21:05 AM

ingtar33 said:
mmm... the psu and mb are both solid. your problem is behaving like a "short" somewhere in the system. take the motherboard out of the case and check the back of the board for burn marks or dirt. make sure there isn't anything metal behind the motherboard like a screw or something.

manually test the psu... to make sure the psu works. (if you aren't comfortable working with electricity, use a 2nd psu to see if the system will start)

If both of these draw a blank, wash down your mb. The dark board will make stains hard to see, and a lot of cases have open venting in the top. its not hard to imagine liquid getting on the motherboard. Use some q-tips and 90% rubbing alcohol to clean the motherboard from one corner to the other.

If none of these work, we'll assume the problem isn't psu/mb related for a moment (it still can be mb related but we need to be certain). Pull out the gpu and use the onboard video. a dead video card can stop a computer from posting (believe me on this one, it can happen, particularly if there is a short).

if nothing has worked, at this point you're gonna have to assume either 1) the motherboard is broke. or 2) the cpu is broke.



Sadly I don't have the best of luck and I'm almost certain I will end up with assuming one of my parts are broken...

I did look at the cpu cutout and my Hyper 212 evo's stand was touching the metal on my case I don't know what it was called but both the ends where touching the edge of the cutout on the back of my case and there is no way I can make it so It won't touch, don't know if it's a big deal
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May 11, 2013 12:24:40 PM

I fixed it, I happened to have a spare power supply around and it was the seasonic power supply that was causing this problem. I am actually quite dumbfounded that seasonic would have a faulty PSU since it is a trusted brand although I am very relieved it is the PSU and not the mobo but I still think my mobo has some things lined up for me in the future that I won't be happy with.

Thank you guys for all the tips.
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a c 116 V Motherboard
May 11, 2013 10:07:21 PM

CSId00d said:
I fixed it, I happened to have a spare power supply around and it was the seasonic power supply that was causing this problem. I am actually quite dumbfounded that seasonic would have a faulty PSU since it is a trusted brand although I am very relieved it is the PSU and not the mobo but I still think my mobo has some things lined up for me in the future that I won't be happy with.

Thank you guys for all the tips.


great news!

glad you found the issue. try to return the psu... i've never heard anything about their customer service or return policies... they're that dependable. so i will be interested to know how it goes. good luck!
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