When mine crash i turn off the PC  rebooting doesn't work after 5 or 6 hours of mining .once the memory is cleared out im good for another 5 to 8 hour then another shut down clears it up maybe it's something in the memory or network a reboot doesn't clean out that a power off does. . over clocking seems to make it worse so i don't over clock or use third party software but a modded bios seems ok . third party software seems to be  bad .don't need it any way for fan speed etc this miner runs stuff like were gaming not over clock very cool.