I used to have a Ryzen 2700X based system as a server. At the time (no clue if it's still an issue), there was a bug in the interaction between early Ryzen chips and Linux that caused the OS to lock up intermittently. I used a ATmega32u4 board to connect to the reset switch on the PC and as a USB device with a systemd unit that sends a ping to the board every 30 seconds. If the board doesn't see a ping for a minute, it reboots the PC. It was janky as hell, but it worked for 2+ years!