Can i know how many GPUs and what GPUs do you have?
Also, what watt PSU are you using right now?
I'm running at around 1000watt on a 1050watt PSU.
Not sure is this the reason why it has problem detecting my GPU whenever the system restarts.
Or its just purely driver issue.
that rig has 4 1080Ti with 2 x 850 Watts PS but I had no problem with any of my Nvidia cards/rigs (some of them are alone in a PC) with the previous drivers anyway.
1000 watts on a good 1050 watts shouldnt be a problem if you are sure it always stays below 1000 watts. Is this a 80 Gold or 80 Platinum power supply ?
Yes it hovers around 990 - 1005 watt.
Its 1050 watt supersonic 80 Platinum PSU.
i personally think that it shouldn't be Power issue as i tried to run ethereum only mining with watt power around 875watt.
The undetectable gpu issue is still there when my system reboot itself due to errors.
remove one card and see how it goes then. I have a rig that pull 790-810 watts on a 850 watts (Gold) PS and it runs just fine.