Hello,
does someone facing hard reboot (without any info .. just like on/off on PSU) with Claymore v10.0 on windows when mining (in dual mode) and connection to both pools get lost?

Regards
Could be too much draw on the PSU? Really need to provide more detail on your setup though.
It's not PSU i guess. It is 100% reproducible just by pulling out ethernet cable from lan socket. It crashes immediately during restore of the work(when reconnected to pool). Rigs are running days without crash, but when cable pulled off or some problem happened on network, it goes to hard reboot.