What does addnode do and where do I put it? Copy paste all?
What is rpc?

Grippy,
I have the same black screen problem with the same card GV-R929OC-4GD-GA. I tested a new batch file and it artifacted like f***. After reboot it black screens.

Only thing I that has helped me so far is the 2nd bios on the card. Just flick the switch and it works again. Keep me updated if you find some solutions or good mining setting.