ssd keeps dying (OT)

I know this is a bit OT, but you guys are great at answering all questions. I bought a workstation from Titan computers around 1/2020 (dual EPYC cpu). After about 1 year it stopped working. I could ssh to it, and almost any command would return Input/Output error. Unfortunately journalctl gave input/output error so I can't see logs. cat /proc/partitions did not show any nvme device (the root device) on which the OS was installed. I replaced the SSD with a samsung 980 pro. Reinstalled fedora. It then worked a few weeks, then the exact same symptoms. I replaced the SSD with another samsung 980 pro, this time with heatsink. Reinstalled fedora. It worked a few weeks. Then same symptoms. Then I replaced with a 4th samsung 980 pro, but this time instead of using the M.2 socket I used a pcie-m.2 adapter (in case something was wrong with the m.2 socket). Also added a surge protector outlet for good measure. Reinstalled. Watched the smartctl. No errors. Temperature was always low. Now it's failed again, exactly same symptoms. Any ideas? Thanks, Neal