Recent Random Reboots

[McPaddy00]

In the last two/three weeks I have been have a number of unexplained reboots. Hardware wise nothing has changed and I don't believe it's a software issue. The reboot sometimes happens hours after gaming, or it can happen a few minutes after turning the computer while it is idle. Some times it will reboot 2 or 3 times in a row. It has even reboot twice while being in the bios menu. It feels very much the same problem as this old post.

The Windows event logs just has EventID 41 Kernel-Power.

These are the steps I have try so far to debug the issue:

1. Monitored the temperatures, they holds steady under benchmark
2. Swapped out the video card (3090) for RX5700 xt
3. Taken out 2 of the 4 sticks of memory
4. Taken out the other 2 sticks of memory

The setup up:

• CPU: AMD Ryzen 5 3600X
• CPU Cooler: Corsair H55
• Mobo: Gigabyte X570 Aorus Pro
• Memory: 4x 8GB DDR4-3200 CL16
• NVME: Sabrent Rocket 2 TB M.2-2280
• Video: 3090 which was a upgrade in August from RX 5700 XT
• Case: Corsair 110R
• PSU: Corsair RM750X
• Fans 2x Corsair ML120
• Cables: All the ones provided by the PSU.

The machine was built in December 2019 with the only upgrade being the video card in August. As I mentioned before it has been running sweetly for the last few years and 3 months with the new video card.

I have update all of the drivers to the latest. Including the bios which was pretty scary with a machine that randomly reboots.

My gut feel is that there might be an issue with the PSU.

1. Is there anyway to confirm that without using a second PSU?
2. Any stats I could look at?
3. Is there anything else I can try to debug the problem?

Thank you in advance for any help you can offer.

[McPaddy00]

For anyone following long at home I swapped the PSU and it still happens. All eyes are now on the mobo now.