You left out important details. The GPU doesn't display anything at all? Even before windows loads still no signal or it displays fine and loses signal after windows loads?
If it doesn't display anything at all it can't be driver related as the drivers are not even used before windows loads. In that case I suggest to try with a different display cable, maybe your own display cable that you know works. Otherwise it can be a BIOS compatibility issue, try to reset the bios to default settings.
If it loses signal after windows loads into memory it can be driver related... You need to start windows into safe mode and uninstall the previous drivers from there using DDU.