Forum Thread

Custom Built PC Showing No Signs of Power

stars fan 593 81 December 25, 2015 at 01:40 PM
Tried to turn on my custom built computer today and it's showing zero signs of power. Fans don't turn on, no signs of booting, nothing at all. Computer has been working perfect for two months until today.

I had just brought it home for the holidays so I unplugged all cables and reseated them and sill nothing. Have tried multiple wall sockets and have double checked the power switch on the power supply. Additionally I've tried unplugging all the power except for the board power and I'm still getting no signs of power. I have a Z97 Gaming 5 motherboard which has no actively lit LEDs. My power supply is a Corsair 650W gold which is more than enough for my 6600K and 970 and does not have a LED to show its actively working. I've also tried the screwdriver trick on the power switch to test the case.

Any other recommendations for troubleshooting? Does this sound like a power supply issue? Can try to pick up another one tomorrow, but this one is under warranty. Any tips or tricks would be appreciated.

12 Comments

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Joined Jun 2005
Let Sleeping Dogs Lie
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#2
unplug all drives and remove memory, you can also try removing and putting battery back in, make sure the extra 4 pin plug for the motherboard is plugged in.

take the motherboard out of the case to make sure it is not grounding out
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Last edited by komondor December 25, 2015 at 02:41 PM
Joined Mar 2004
L11: Monkey's Apprentice
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#3
If you suspect power supply unplug completely from all components and then jump the correct two pins, can easily be googled. You can also always buy a little plastic plug that does this for you. Either way, that will instantly tell you whether the PSU is dead or not.
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#4
Don't take this the wrong way, but eliminate ALL of the simplest possibilities first: wall outlet, surge protector, power cord, power switch on the back, etc.

Then unplug the psu from everything in the computer and try the test suggested above to turn the PSU on.
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Joined Oct 2006
L5: Journeyman
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Original Poster
#5
I plugged the 24 pin into a tester and its registering as working properly. Unfortunately the tester design doesn't fit the CPU power connection properly to test it. I have tried multiple plugs and double checked all switches. About to try removing and reseating the MOBO.
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Joined Jun 2005
Let Sleeping Dogs Lie
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#6
no don't reseat power it on outside of the case with everything unplugged
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Joined Oct 2006
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#7
Quote from komondor View Post :
no don't reseat power it on outside of the case with everything unplugged
Borrow a friends power supply and still getting absolutely no power. Will try removing the motherboard and booting it. Thanks for the responses.
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#8
If there is a switch on the power supply, make sure it is on. After the power cord is plugged into the power supply, did you push the on switch on the front of the pc?

Your problem isn't inside the case. You are missing something simple.
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#9
Do the fans turn at al, maybe 1/2 of turn like it got a quick shot of power? If so it could be a short circuit in one of the devices.

I have found the psu testers tend not to work, I have had more then one show the PSU good but would fail under load.
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Joined Aug 2010
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#10
Take a look at the capacitors on the mobo and see if they look dented outward on top. Also was this overclocked?
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Joined Oct 2006
L5: Journeyman
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#11
Fans didn't spin at all. I tested the motherboard outside of the case also with nothing. Additionally, I tried another working power supply and nothing. I sent the board out for RMA, unfortunate for sure. I now have the power supply in an old build and it is working fine.
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Joined Feb 2004
L10: Grand Master
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#12
Quote from stars fan View Post :
Fans didn't spin at all. I tested the motherboard outside of the case also with nothing. Additionally, I tried another working power supply and nothing. I sent the board out for RMA, unfortunate for sure. I now have the power supply in an old build and it is working fine.
Yup, sounds like the mobo is dead. Hopefully the CPU and other components are fine.
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Marshall: Have the rest of you guys figured out by now that mmathis is the smartest guy on SlickDeals?
#13
Funny, exact same thing happened to me last week. Dead ASRock Mobo. Wish they cross shipped RMA stuff.
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