Question How to troubleshoot a system randomly restarting?

[donovannelson99]

Sorry If This is in the wrong category , i wasnt sure where to put it.
Hi My Pc Keeps Randomly Restarting After a weird power thing(my power kept turning on and off for about 5 minutes) 2 months ago . It used to be once a day but it has been slowly progressing to the point where it has become unusable.I cant really describe the restart other than it looks the same as if I just flipped the power switch off and on really quickly.
Usually it posts fine after the restart but occasionally it doesnt post and the ez debug light shows cpu until I restart it again.I think its worth mentioning the whole system is only 2 years old.

System Specs:
CPU : Ryzen52600
GPU: 1050ti 4gb
PSU : Some or another corsair 550 watt
Mobo : A320M Pro-VD plus
Ram : 2 slightly mismatching sticks (both 8 gig , but one is 2666 and one is 2133 but I don't think this is the issue because it worked up until 2 months ago)

What I have Tried:
Replaced the PSU (the PSU was 6 years old but my brother gave me an older but not as old one of his that was only 2 years old to replace it with)
About a month in I reinstalled windows and about a week ago I DDU ed my drivers
Replaced my HDD ( I had a spare one so I thought "eh why not")
Turned off automatic restart in windows
Changed minimum processor state in my power plan
Ran MEMTEST and it said all was good

I have tried to get it to consistently restart but I cant , sometimes it restarts when Im playing a game other times when im just using discord and chrome. I cant get it to consistently crash when running kombuster . I check CPUID logs after it restarts and my temps were always 60 or below on the GPU and 50 or below on the CPU before it restarts so I dont think its restarting because of heat

Can Someone please provide me with some troubleshooting steps or even parts to replace (preferably cheapest parts first)

 

[Ralston18]

Is your pc plugged directly into a wall outlet or are there interim connections: extension cord, power strip, surge protectors, UPS?

Are there any other devices sharing the outlet/circuit with your pc: Window air conditioner, heater, refrigerator, etc.?

Does the pc stabilize if you provide power from another outlet preferably on a different circuit?

If you can eliminate a possible service/home related electrical problem then I would suspect the PSU.

The old (6 years) one basically failed and then the new (2 years) is simply not able to provided the power being demanded by your build.

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Another suggestion: manually download drivers from the applicable manufacturers' websites. Manually install and reconfigure for your build. No automated tools.

 

[donovannelson99]

Hi , thanks for the reply
My pc and 2 monitors are plugged into a multiplug thats plugged into the outlet
DDU erases every trace of ur graphics driver then you hvae to manually install it
It didnt restart for a full weekend in another room(on a different circuitt) but that mightve of just been luck