Thursday, April 2, 2015

motherboard - PC suddenly shutting down. Not turning on. Red CPU light on mobo

I've had this problem with my PC for some time now in which I am able to use it for at most 8 hrs., but eventually it won't turn on after letting it rest after 12 hrs. or so. I also noticed the red CPU light in the mobo turning on. I have all the fans spinning, but not getting any display or having the mouse or keyboard functioning. There are also times when it suddenly shuts down and gets the CPU error after turning it on again.


So far, I have tried: removing the CMOS battery and putting it back again, placing RAM sticks on to other slots, buying a voltage regulator for the power supply, plugging out the 3-pin CPU fan connector and plugging it back in.


To sum it up, I am able to use my PC normally, but if overused it tends to 'rest' and only turns on again after some time. During that resting phase is the turning on of the CPU light in the mobo. There are also times when it suddenly shuts down and goes to the 'resting' phase again.


My specs include:



  • PSU: Strider Plus 600W 80plusBronzePSU: Strider Plus 600W 80 Plus Bronze (SST-
    ST60F-PB)

  • PSU: Strider Essential Series 500W 80 Plus Bronze (SST-ST5OF-ESB)

  • mobo: MSI Z170A-G43 PLUS

  • GPU: MSI GEFORCE GTX 1060

  • CPU: Intel Core i5

  • RAM: Vengeance LPX DDR4 16GB

  • SSD: V-NAND 850 EVO

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