Question PC randomly restarts, rebuilt PC but it's still happening ?

Mar 29, 2024
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OK this might be long winded. Ive been having this issue for a couple months now, and after a full rebuild, the issue is coming back.
Built a new PC in December. Not my first build, Im no stranger to building a PC.
But here is the issue/symptoms:
Computer Randomly restarts. Usually under low load, web browsing, remote connection, or just sitting at desktop. I can game under high loads for 12 hours and its fine. But if it sits at the desktop, I can come back to computer and see it restarted. I have all power options at max performance, no sleep, no monitor off, no turn off HDD. I can 'sense' when its about to restart. You cant click on browser, open or close apps, and the key to when I know its about to restart is when I hit WIN key, and type something to search, its blank. But videos and audio still play. Then few moments later it restarts.

Since it just restarts with no BSOD I get no crash logs. All I get is Event Viewer system errors of improper shutdown. Kernal Power 41
It went from very infrequent to daily, but never while playing games., just when on dash or internet. So I researched a little and heard this happening with incompatible RAM. So then I noticed the RAM I choose was not technically compatible with mobo. IT worked, it was just that the 32GB sticks were not compatible. So I bought new RAM, ones fully listed as compatible and EXPO compatible. Issue still existed.

So I started looking into PSU issues. Then the power when out and computer was never the same. Now the issue of restarting randomly was frequent, hourly or even more often, while gaming. Basically I couldnt keep it on. So I put 2 and 2 together and thought power issue.

Replaced PSU with EVGA 1000G FTW. but issue still persisted. Only part I was wary of was mobo, it was 10 days from no Qs asked replacement from Newegg, so I replaced the mobo too. So I just decide to cut bait and do a full rebuild from scratch.

Full rebuild. Reinstall of windows. Cut RAM to 2x 16GB. Issue when away.... for a bit. Then randomly 1 day I come back to PC and its restarted. Did more research and someone said to turn off ReSize BAR. I didnt even know what that was, so in Bios i turned that off. Worked great for a bit, thought I solved it, then it happened again. Today, it did its classic symptoms of slow down, cant open/close apps, no windows search... then it restarted. So now after replacing every part but the GPU and CPU. GPU was used in my other computer as I got parts for this build and work fine. Only thought now is CPU... or for you smarter then me people to notice or think of something I have not.

If its on the internet for a simple fix I've tried it.

  • Power settings to performance, No turn off monitor, HDD, etc.
  • Turned off EXPO, lowered RAM speed, removed RAM, alternated ram, ram slots, etc.
  • Turned off ResizeBar
  • Reinstalled windows. x2
  • DDU drivers, reinstalled all (before and after rebuild.
  • Reinstalled all chipset drivers.
  • Temps always very normal or low. 40c on idle, 60c on max gaming.
  • Rebuilt PC with new mobo, RAM, and PSU.
  • CPU stress tested

I have literally tried everything. The only parts in this PC that are the same is the GPU and the CPU. GPU works fine in other computer. CPU passed all stress testing. Im at a loss. Ive built many computers over the years and have never had a problem like this, even after swapping parts. I feel like im going crazy trying to diagnose an issue that I cant get data on from the computer of whats really wrong. Its all trial and error and im out of trials. Minus replacing the CPU.

Original parts. --> rebuild parts:

Ryzen 7800X3D
ASUS Prime x670E-Pro Wifi ---> ASUS ROG Strix B650-A
Corsair 850RM ---> EVGA 1000G FTW
Teamgroup 32xGB x2 6000hz ----> Corsair Vengeance 4x 16GB 6000hz
Gigabyte Geforce RTX 4070ti OC
Samsung 980 Pro (Boot)
WD Black SN850X (Games, data)
Lian-Li AIO
Lian-Li Infi fans
NXT Flow h9 case
 
Sounds like you've tried a lot, there's not a whole lot I can think of sadly. The best I can think of is to remove as much hardware as you can while still being able to boot up the PC. So for example, if you (for some reason) have an ODD...disconnect, other HDDs...disconnect, PCIe WiFi card...disconnect etc. just to see if perhaps one of these unsuspecting devices could be shorting out your computer. Also update BIOS even though you purchased a new mobo.