My experience and solution:
For windows 11 and AMD 7950x I was randomly crashing and trying to reboot and when it rebooted the SSD was unavailable. It required me to pull the power cord and then the computer would be fine for a random length of time. I lived with this issue for 7 months as it happened in waves. Going to for weeks with no issues, and then have the issue every day for a week and then stability for a while.
For windows 10 and AMD 5950X, I was rock solid until a windows update in late June. Then the computer started randomly locking up and became completely responsive. It never rebooted and requiired a physical reset and then it would work for couple of days. Then it would work for 1 day, I updated bios and drivers and the computer started locking up within minutes of booting into windows EVERY TIME. A search on Microsoft forums found that random people were experiencing the same issue since the same update.
Before the 5950x had started having the issue every 5 minutes, I had used powershell to compile every single log possible into a master file to look for any hints as to what events might be triggering it. For the 7950x, there was no hints at all. For the 5950x, it mentioned something about a sleep state. This led me to go nuclear.
I disabled all CPU overclocking (PBO) and global sleep states in the bios. Both cpus run at the base frequency at all times. Since I made this change in mid July, neither machine has had a single issue. There is definitely something going on, but I do not have any more tools to diagnose it. I think when the amd drivers go to reduce or increase the frequency on one or more cores, there is a race condition that is not being handled.
The only other thing I can think of is that maybe the UPS Battery backup device that backs up the power to both computers may be bad causing a motherboard timer issue that the CPU can't handle.
