PC won't turn on

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daosviii

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Sep 18, 2010
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Good day..

My recently custom built PC suddenly won't turn on.. I've tried to press the power button multiple times, i've tried to disconnect the power cable but still no result..

I suspected the power supply to be faulty but the LED at the back of my graphics card was lit green.. the LED turn red if i remove the 8 pin connected to it..

My system spec :
Intel i5 4670
Gigabyte H87N-Wifi
Asus GTX760 DCU OC
Silverstone Strider Essential 600W
Kingston HyperX 8GB

Thanks in advance
 
Solution
JOHNN93
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JOHNN93

JOHNN93

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Oct 3, 2013
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disconect everything even frontpanel connectors .
leave only psu mobo ram cpu.
where the powerswch was jump the pins with a key or something conductive to see if it turns on if it desent.
disconect everything fron the power supply and jump the green and the black wire on the 24 pin conector and check every voltage with multi meter if not at least put a fan to see if everything is working.
if the power supply is working conect onlt the motherboard and cpu no ram no gpu.
do this method insering everything once at a time untill you ind what is causin it nt to turn on.
do a physicl inspection for damadged capaciros blunt or blown.
 
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daosviii

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Sep 18, 2010
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i tried to connect the green wire to the black wire, but the power supply doesnt turn on.. but how did the graphic card LED was able to lit green??
 
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JOHNN93

JOHNN93

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the power supply has a stand by voltages this is usualy refered as vsb if there was no voltage in the motherboard then there whould me no wat it whould power on the cuirquitry on the motherboard need to be active somehow.then you press the power button a signal powers up the power supply so it can give the other voltages needed so that the computer can start power the mobo.the problem is your psu.
you gave that signal to the psu jumped the green with the black wire.the green wires is refered as the power on and for the power supply to turn on it needa to be conected with ground.if you conect these 2 and nothing happens then no signal is coming from the power on and the damadge is within the psu.replace the psu and you are ready to go ;)
 
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Beepbupbob

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Dec 13, 2013
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hey, just wanna ask, my pc suddenly died when i was watching a movie and wont turn on so i think its the power supply but then when i connect my roccat apuri led turns on (my motherboard is 990fxa ud3 from gigabyte)so i think is the mother board that cause the problem? or i just have a bad psu that will kill all motherboard? cause right now i bought a new mother board that is the sabertooth r2.0 from asus and now my pc is working fine again but still a bit scare if my psu will kill my new motherboard again ,btw my psu is the coolermaster 620 m2 silent pro 80+ bronze
 
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JOHNN93

JOHNN93

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take the psu to someone that has a ociloscope to check the ripple under load.so he can tell you if your psu has a problem.or at least go in the bios and check voltages under pc health.if you see rapid changes you might have a bad psu.with an ociloscope you will know for sure.the guy should not take more than 15 minutes to give you an answer.
 
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smeezekitty

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Sep 11, 2012
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Sounds like your mobo just died. Check temps and voltages but chances are if its working, it will be ok.
That PSU is one of coolermasters "ok" ones
 
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EvgaLover

EvgaLover

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the power supply has a stand by voltages this is usualy refered as vsb if there was no voltage in the motherboard then there whould me no wat it whould power on the cuirquitry on the motherboard need to be active somehow.then you press the power button a signal powers up the power supply so it can give the other voltages needed so that the computer can start power the mobo.the problem is your psu.
you gave that signal to the psu jumped the green with the black wire.the green wires is refered as the power on and for the power supply to turn on it needa to be conected with ground.if you conect these 2 and nothing happens then no signal is coming from the power on and the damadge is within the psu.replace the psu and you are ready to go ;)
 
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Beepbupbob

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Dec 13, 2013
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dont think there's a guy with that here, and i think its the motherboard problem cause first my old motherboard is rev 3.0 from 990fxa-ud3 from gigabyte and i read bad reviews of that version cause of it's bad vrm and heat spreader ,my temp right now is like way lower that it used to be and when i checked the bios like you said it changes but only after 30-50 seconds and go back and give more power when it is full load or when im playing heavy games that at least take 90% load but i talked to a local shop they said it's fine, let's just hope for the best! lol
 
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