Pc not recognizing monitor

[u/PlentyBrilliant6643]

Yesterday I turned on my PC and my monitor booted up at default low settings when I went to go put the resolution back up there wasn’t any options above the one I had when I went to nvdia control panel. It wasn’t recognizing my main monitor it just said, generic PNP and it still wouldn’t let me upscale it but when I turn my variable refresh rate off and on. On my monitor menu it goes back to normal but every single time I reboot my PC it goes back to not recognizing it when I switched to a HDMI cord instead the problem didn’t happen, but I wanna figure out why it doesn’t work with a display port/I know it’s not my display port being bad because I use a different display port and the same thing happened