Computer Crashes/Freezes, Solid State Drive Occassionaly can't be found

Built a brand new system in March. It crashed completely in August. Reinstalled everything, figured I picked up a virus (wasn't running any protection).

End of November, I went on a trip. When I came back, the computer wouldn't start - couldn't find the SSD.

After much pain (flicking power on and off) it managed to find it again and reboot.

Now, every 20 minutes or so, the entire system goes into a freeze (time clock spinning, going nowhere though). Only repowering seems to fix the issue. Occasionally, can't find the SSD again.

I put the computer into Safe Mode and wasn't able to replicate the problem.

Seems like I'm not the only one having issues with this.

WTF?