Like adaseb said above. It's more than it benchmarking a lot of different algorithms and your GPUs are too heavy overclocked/underclocked on some. Best is to use like only a slightly overclock and run NiceHash benchmark, then it should be fine, if you havn't alter the memory strips on AMD cards too aggressive as well.
Seems strange that your GPUs dissapeared. Maybe it just hang? And requied a hard reboot (power off/on)?
Its all back apart from the missing ssd now. Its showing up in disk management but with a bracket quite a few spaes back on the serial number. Ill try unplugging it and rebooting later then hook it up again.
EDIT:-
Swapped the Sata cable to a different port and all sorted. Now just got to try and get NH 2.0.3.0 back on and working. Keep getting a hanging white screen after querying Open GL
EDIT 2:-
Managed to use the old NH Miner I have and it auto updated to the latest version by itself, which was a result. Also figured out that the white screen was caused by having the Primary Display Output set to PCIE in the Bios. Changed that to onboard graphics and its working fine now.