Endwalker crash made game unplayable

[Levinhelp]

During certain cutscenes/transitions it would cause my entire PC to crash and the fans to go crazy with the screens going black with my only thing left to do is manually turn off the PC. But now it's also causing my secondary monitor to no longer be detected and when I get to the main menu it lags incredibly that trying to log in is impossible. Right now Im stuck with a working monitor that won't detect and game itself to take a very long time for the main menu to load but when its finally load it's practically a slide show and I have no idea how to fix any of this.