Boot Issues - Random Shut -offs

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Brad-JHB

Commendable
Jul 14, 2016
1
0
1,510
HI Guys,

Hoping you can help me out here, so about 8 months ago i built a custom pc, and it worked fine for a good few months, however in the last few months, my PC just Randomly Shuts down.. and then i have to wait a good couple of hours before i can turn it back on again. With power still connected i can see a green MB Light but just no response within say 4-6 hours after the random shut-down.

Testing i have tried:
- PSU Paper Clip Test (worked fine)
- Reseated CPU and replace Thermal Grease
- Checked MB for shorts
- Unplugged and left only essential components

Setup:
CPU - i7 4790k
GPU - MSi GTX 960
PSU - Cooler Master V850 (Modular)
Cooling - Cooler Master Nepton 140 XL Water Cooling
MB - ASUS Z97-k
RAM - Corsair Vengence 4x8GB

Any advice is greatly appreciated,

Thanks,
 
Solution
0
My first instinct is thermal then power. Check your CPU/video card temps with a program designed to help you monitor temps like HWMonitor. Monitor them for a couple hours and look for a steady rise. If not thermal check power.

Buy a cheap non modular 5-600w power supply and keep it around for testing, you don't even need a new one, it will help you rule out things like this in the future. Obviously when using the bench power supply, no need to mount it just wire it up outside the chassis and test it out. The paperclip test is ok, but really only to tell if a power supply is completely dead, sometimes under load they just quit.
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01111111

Respectable
Jun 7, 2016
179
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1,860
My first instinct is thermal then power. Check your CPU/video card temps with a program designed to help you monitor temps like HWMonitor. Monitor them for a couple hours and look for a steady rise. If not thermal check power.

Buy a cheap non modular 5-600w power supply and keep it around for testing, you don't even need a new one, it will help you rule out things like this in the future. Obviously when using the bench power supply, no need to mount it just wire it up outside the chassis and test it out. The paperclip test is ok, but really only to tell if a power supply is completely dead, sometimes under load they just quit.
 
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