Ran memtest today, 4 passes with 0 errors.
I am also running a low profile usb stick. While it hasn't died, maybe there is something to the heat it's absorbing? I added a USB extender, and using a port from the rear this time.
Did you (or anyone) find a root cause for this, and potential solution? I just started experiencing this, and it’s happened 3 times within the last week. Do I need new memory or replace boot USB as others alluded to?