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Computer shuts off and won't turn back on unless power is unplugged (sometimes)


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7 replies to this topic

#1 Duncanh8

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Posted 18 September 2016 - 06:17 PM

This is a very weird and confusing issue for me as I am usually pretty good with computer problems but this one stumped me.
This problem started off about 5 months ago... The computer worked fine for about 8 months before that with no problems. Okay so randomly when im using it, it will just completly shut off. The moniter goes black the fans turn off... This would happen in the middle of me using it. No bios, no beeps, no nothing. IT would never turn directly back on sometimes I would have to unplug the power cable and plug it back it... sometimes i would have to wait hours, sometimes as long as a full day before it would turn back on. It didnt happen for the last week so I thought it was fine but it just did it a few hours ago. It dosnt matter if im playing games on max settings or just browsing the internet it would do it anyway. I finally tried the paperclip trick and the PSU spun up just fine but after plugging it back in to the computer nothing happened. I have tried unplugging and cleaning out all the cables, unplugging and replugging in components, and untangling unused cords to check for shorts. The thing that confuses me the most is why it would turn back on if it shuts off randomly? Do you guys thtink its a PSU issue or something else? I will list my compnents and their approximate age in order for you to better understand my issue. (I built this computer myself)
Z97-G45 Gaming Motherboard (Bought new less than a year old)
I5-4690k (Bought new same time as motherboard)
GTX 1060 (Bought new less than 2 months ago)
Corsair CMPSU 600G (About 3 years old but only used for the last year or so)
Intel 2gX4 Ram (About 3 years old but only used for the last year or so)
There are plenty of 120mm fans to keep everything cool and temps have never been over 58C so im not worried about overheating.
Please help me I have absolutely no idea what is wrong. At this moment I cannot get it to boot. Pressing the power button does nothing.

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#2 technonymous

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Posted 19 September 2016 - 08:43 AM

Check the bios battery it's probably dead.



#3 Duncanh8

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Posted 19 September 2016 - 09:44 AM

Not sure what that is or how to check it?

#4 hamluis

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Posted 19 September 2016 - 10:29 AM

Google List

 

Louis



#5 Duncanh8

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Posted 19 September 2016 - 10:46 AM

Okay I figured out what that is but the motherboard is less than a year old how could that be the problem? Also I have never had a problem with the internal clock

#6 mjd420nova

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Posted 19 September 2016 - 01:12 PM

This is a fault of the power supply.  Voltages are not shutting off as they should on power down from the front panel.  It takes full power removal to get it restarted.  Removing the AC power allows the voltages to bleed off and get all devices back to the start point.  It only takes a residual amount to keep the MOBO and other cards in a non-reset state, not allowing it to start properly.



#7 Duncanh8

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Posted 19 September 2016 - 01:47 PM

What would you recommend I do?

#8 mjd420nova

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Posted 19 September 2016 - 05:46 PM

Start with the power supply, if that doesn't cure the fault, the problem is on the MOBO.






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