Most likely to be the cables, with the my v1 cables failed twice.
However, it could be also be amd/nvidia drivers.
On one occasion, i had blackout and wmr not detect G2. Problem remained after I replaced it with brand new spare cable.
I thought it could be video drivers corrpted, I updated the AMD driver did not help. I was just about to bin the headset.
Then I remembered reading suggestion on the forum. One should always completely remove existing driver with DD Uninstall prior to updated video drivers.
And it works.. I saved me twice now.
Before replacing your cable, just try to remove your existed video driver with DD uninstall and reinstall video driver again.