Can be a pool issue too, had that happen with some pools.
sure about that? IMO, auto reboot has nothing to do with pool
maybe not the auto-reboot but my computer would just stop responding to anything, had to reset it. When i switched pool, it stopped.
Just giving an idea of what might happen but hardware have to be the first place to look.
perhaps, the same problem of mine after system reset .
you should check the hardware cause I had the same problem before. the reason of auto reboot of mine is power port of GPU is burned.yours, maybe the machine or hardware.