I recently bought a Mac Pro, preinstalled with Sierra, after getting OCLP Monterey installed on the drive it worked fine til I did some root patches, such as set the boot picker to 0 seconds to I could choose between boot option and OCLP gives a boot screen to my non-flashed EVGA GTX 760 2GB and picked the nVidia GOP driver, but afterwards, I couldn't get any video. It does chime and the diagnostic lights show SYS_PG but not EFI DONE or GPU OK. Is there any hope for this as I've tried resetting the PRAM and NVRAM several times and tried to click around getting to the correct boot device but haven't made any progress, any help is greatly appreciated.