Hi All,
First thing sorry if this is going a long post, but I thought it could be helpful to share all the information and what I've done so far to avoid too much back and forth.
In November I built a new PC, but I've been experiencing random reboots while using it.
The Build
Mobo: MSI MAG B550 TOMAHAWK (originally: ASUS ROG STRIX B550-F GAMING - see below)
CPU: AMD Ryzen 7 5700X
CPU Cooler: Corsair iCUE H100i ELITE CAPELLIX
RAM: Corsair Vengeance RGB PRO 32GB (2 x 16GB) DDR4 3600MHz C18, (AMD Optimised)
GPU: Zotac GEFORCE RTX3080 Ti Trinity
SSD 1: Crucial P5 Plus 500GB M.2 PCIe Gen4 NVMe
SSD 2: Samsung 980 1 TB PCIe 3.0 NVMe M.2
PSU: Corsair HX850 850 W Full Modular 80 Plus Platinum
Case: Corsair iCUE 4000X RGB
The Symptoms
The PC randomly reboots while using it, they look like as if I pressed the reset button on the case. So power down, power up, POST and windows boot. Sometimes I get 2/3 per day, sometimes all works well for a week and then it starts again. Sometimes they happen in a "cycle" so it happens 2/3 times in a row (also when POSTing) until it shuts down (I think a Mobo protection kicks in).
I don't remember when I had the first one, but probably few weeks after the build was completed.
Initially they were pretty random and far apart, but now they are happening with more frequency and I want to get to the bottom of it.
They happen in all situations, while playing, while browsing, a couple of times while looking at the BIOS.
There are no Windows dump or minidump also if they are setup correctly, also no BSOD at all.
Windows Event viewer just shows Kernel Power errors 41 with no extra info.
What I've done so far
First thing I did was to remove everything and put it back in place, thinking it could have been some issue with a component or cable not correctly in place. It didn't work.
I started monitoring temperatures with either Corsair Icue or HWInfo, they looked good:
Idle: coolant under 30, CPU around 40, GPU around 40
Gaming: coolant around 30, CPU around 60 and GPU around 70.
Also I would expect that if the issue was related to overheating it would propose itself while playing or during long gaming sessions, but it did reboot more than once while doing nothing. And some other times was able to play 3/4 hours straight with no issues.
Then I turned my attention to the mobo after talking with some friends.
I updated the BIOS, disabled C states as per this post I found here on reddit https://www.reddit.com/r/ASUS/comments/mfiuhn/b550f_gaming_randomly_restarts/ but it didn't work.
Contacted Asus and they suggested it could have been a faulty mobo, I returned it and got the MSI Tomahawk instead. Put everything in place on the new mobo, had 3 days with no reboots and then I experienced it again.
Then I started to look at every other component.
I started with the RAM (also if I would be expecting BSOD if they were the issue). Tested them with memtest from a bootable USB, I got a random reboot after 3 or 4 hours in. I thought I found the culprit, so I retried the test and this time it passed with no issues. Looking at the original logs, they just stopped with no error recorded.
I also tried to swap them for some spare ones a friend had:
Crucial RAM 16GB (2x8GB) DDR4 3200MHz CL22
But still experienced a reboot during idling.
The same friend of the RAM had a spare 1050Ti and I tried swapping my 3080 for it, I started a low demanding game and the PC rebooted while in the main game menu.
As the issue happened while running the test from the bootable USB and also while navigating the BIOS I excluded the SSDs.
Then I stress tested the CPU with prime95, did 2 runs on 2 different days of 3 hours each with no problems or reboots.
I tried to swap the Power cord and change 3 different sockets in the room, no luck.
I also removed the reset pins from the mobo thinking it could have been some issue there, but again it didn't work.
Last thing I tried was to change the PSU switch from Multi to Single for the 12V lines, worked for 3 days and then it rebooted again.
Data
This is a log I took from HWInfo while leaving the PC open on the main menu of a game for a while till it rebooted.
I don't see anything off, but I don't understand half of the columns there
https://drive.google.com/file/d/1Xk_C1NT-CGNMT-WhTTV6YdjAP_ci10FL/view?usp=drive_link
What do you think could be causing the issue I'm seeing? The only pieces left untested are the CPU and the PSU.
I have the feeling that could be the PSU at this point, but I would expect it to cause issues during high load and not during idle. Unfortunately I cannot test it without getting a new one as I don't know anyone that has a spare.
For transparency I had an open thread on reddit about this issue but had no luck in finding a solution: https://www.reddit.com/r/buildapc/comments/15w8dk4/new_build_random_reboots/
First thing sorry if this is going a long post, but I thought it could be helpful to share all the information and what I've done so far to avoid too much back and forth.
In November I built a new PC, but I've been experiencing random reboots while using it.
The Build
Mobo: MSI MAG B550 TOMAHAWK (originally: ASUS ROG STRIX B550-F GAMING - see below)
CPU: AMD Ryzen 7 5700X
CPU Cooler: Corsair iCUE H100i ELITE CAPELLIX
RAM: Corsair Vengeance RGB PRO 32GB (2 x 16GB) DDR4 3600MHz C18, (AMD Optimised)
GPU: Zotac GEFORCE RTX3080 Ti Trinity
SSD 1: Crucial P5 Plus 500GB M.2 PCIe Gen4 NVMe
SSD 2: Samsung 980 1 TB PCIe 3.0 NVMe M.2
PSU: Corsair HX850 850 W Full Modular 80 Plus Platinum
Case: Corsair iCUE 4000X RGB
The Symptoms
The PC randomly reboots while using it, they look like as if I pressed the reset button on the case. So power down, power up, POST and windows boot. Sometimes I get 2/3 per day, sometimes all works well for a week and then it starts again. Sometimes they happen in a "cycle" so it happens 2/3 times in a row (also when POSTing) until it shuts down (I think a Mobo protection kicks in).
I don't remember when I had the first one, but probably few weeks after the build was completed.
Initially they were pretty random and far apart, but now they are happening with more frequency and I want to get to the bottom of it.
They happen in all situations, while playing, while browsing, a couple of times while looking at the BIOS.
There are no Windows dump or minidump also if they are setup correctly, also no BSOD at all.
Windows Event viewer just shows Kernel Power errors 41 with no extra info.
What I've done so far
First thing I did was to remove everything and put it back in place, thinking it could have been some issue with a component or cable not correctly in place. It didn't work.
I started monitoring temperatures with either Corsair Icue or HWInfo, they looked good:
Idle: coolant under 30, CPU around 40, GPU around 40
Gaming: coolant around 30, CPU around 60 and GPU around 70.
Also I would expect that if the issue was related to overheating it would propose itself while playing or during long gaming sessions, but it did reboot more than once while doing nothing. And some other times was able to play 3/4 hours straight with no issues.
Then I turned my attention to the mobo after talking with some friends.
I updated the BIOS, disabled C states as per this post I found here on reddit https://www.reddit.com/r/ASUS/comments/mfiuhn/b550f_gaming_randomly_restarts/ but it didn't work.
Contacted Asus and they suggested it could have been a faulty mobo, I returned it and got the MSI Tomahawk instead. Put everything in place on the new mobo, had 3 days with no reboots and then I experienced it again.
Then I started to look at every other component.
I started with the RAM (also if I would be expecting BSOD if they were the issue). Tested them with memtest from a bootable USB, I got a random reboot after 3 or 4 hours in. I thought I found the culprit, so I retried the test and this time it passed with no issues. Looking at the original logs, they just stopped with no error recorded.
I also tried to swap them for some spare ones a friend had:
Crucial RAM 16GB (2x8GB) DDR4 3200MHz CL22
But still experienced a reboot during idling.
The same friend of the RAM had a spare 1050Ti and I tried swapping my 3080 for it, I started a low demanding game and the PC rebooted while in the main game menu.
As the issue happened while running the test from the bootable USB and also while navigating the BIOS I excluded the SSDs.
Then I stress tested the CPU with prime95, did 2 runs on 2 different days of 3 hours each with no problems or reboots.
I tried to swap the Power cord and change 3 different sockets in the room, no luck.
I also removed the reset pins from the mobo thinking it could have been some issue there, but again it didn't work.
Last thing I tried was to change the PSU switch from Multi to Single for the 12V lines, worked for 3 days and then it rebooted again.
Data
This is a log I took from HWInfo while leaving the PC open on the main menu of a game for a while till it rebooted.
I don't see anything off, but I don't understand half of the columns there
https://drive.google.com/file/d/1Xk_C1NT-CGNMT-WhTTV6YdjAP_ci10FL/view?usp=drive_link
What do you think could be causing the issue I'm seeing? The only pieces left untested are the CPU and the PSU.
I have the feeling that could be the PSU at this point, but I would expect it to cause issues during high load and not during idle. Unfortunately I cannot test it without getting a new one as I don't know anyone that has a spare.
For transparency I had an open thread on reddit about this issue but had no luck in finding a solution: https://www.reddit.com/r/buildapc/comments/15w8dk4/new_build_random_reboots/
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