PC was working well with the installed RX580 and amd software from Oct 2022. Got a 6650xt for xmas, installed latest software drivers with the new card installed, screen went black upon restart of PC and no longer have any display on monitor. Using Display Port connection on 6650xt to display port on Dell 27" monitor-result black screen and no way into BIOS that I know of.
Disconnected the 6650XT from logic board, tried Display Port from logic board to Dell monitor, result black screen and no way into BIOS that I know of.
That leaves me with a running PC, no video cards installed, all hard drives disconnected from logic board and Display Port cable to Dell monitor still connected yet no image on screen and the monitor could not find a signal.
Even cleared CMOS by removing battery from logic board.
PLEASE HELP!
I don't know what else to do