My PC a few months back started acting up after a power surge. It would randomly turn itself off and on. I assumed it was the power supply that probably was fried during the storm. [I didn't have my APC power supply yet and it was just plugged into a generic power strip] so i replaced it. I bought a tester and tested both the old power supply and the new one. Both passed and the problem persisted with either being installed.
So next i tried the GPU, i unplugged and booted straight from the motherboard without the GPU in the machine. But the problem still occurred. So that ruled that out.
Then, i took the fan off the CPU and cleaned both the fan and the CPU flat side with a lint free cloth and a light amount of rubbing alcohol and reapplied new thermal paste.
When that didn't work, i replaced the CPU completely. It was too new and too high wattage for the old motherboard, so that was replaced as well.
Neither was the problem, so i maxed out the fans my case could hold in case it was a circulation issue. I rebuilt the PC from scratch to see if a short was at fault. Those steps didn't resolve the issue.
Finally, i replaced the memory sticks as that was the only remaining original peice at that point. The problem still occurs. I booted without the case sides on to see at what point it fails. It fails apon booting the CPU.
I also changed the CPU fan.
I was wondering if there were any other potential causes of a computer failing to boot, but sometimes boot... but then shut off randomly with or without load and then try and turn itself on and off repeatedly.
I'm at a loss because it's a completely new machine at this point and the issue is still occurring.
Motherboard: MSI MPG z390
CPU: Intel i7-8700k
Memory: 4 corsair vengeance lpx 3200MHz 8gb cards.
Noctua NH-L9i fan.
6 corsair case fans.
So next i tried the GPU, i unplugged and booted straight from the motherboard without the GPU in the machine. But the problem still occurred. So that ruled that out.
Then, i took the fan off the CPU and cleaned both the fan and the CPU flat side with a lint free cloth and a light amount of rubbing alcohol and reapplied new thermal paste.
When that didn't work, i replaced the CPU completely. It was too new and too high wattage for the old motherboard, so that was replaced as well.
Neither was the problem, so i maxed out the fans my case could hold in case it was a circulation issue. I rebuilt the PC from scratch to see if a short was at fault. Those steps didn't resolve the issue.
Finally, i replaced the memory sticks as that was the only remaining original peice at that point. The problem still occurs. I booted without the case sides on to see at what point it fails. It fails apon booting the CPU.
I also changed the CPU fan.
I was wondering if there were any other potential causes of a computer failing to boot, but sometimes boot... but then shut off randomly with or without load and then try and turn itself on and off repeatedly.
I'm at a loss because it's a completely new machine at this point and the issue is still occurring.
Motherboard: MSI MPG z390
CPU: Intel i7-8700k
Memory: 4 corsair vengeance lpx 3200MHz 8gb cards.
Noctua NH-L9i fan.
6 corsair case fans.