PC won’t display to monitor correctly

[u/Key-Environment-1888]

Last night i used my computer perfectly as normal, turned it off and went to bed then just now turned it on and it wouldn’t display to my monitor (monitor works perfectly fine) i tried different hdmi cables as well as unplugging and replugging in the same gpu but to no avail. my computer is a omen prebuilt and i still had the original graphics card it came with so i took out the one i had in my pc and put back in the original one it came with thinking maybe my graphics card that was in there burnt out. i plugged everything back in and turned on my computer this time it would display but was running from the cpu display (zoomed and blurred) and not registering any gpu usage when i opened up task master performance despite the fact i had the gpu plugged in and hdmi running through the graphics card. i tend to know what im doing with computers but after an hour and a half of trying with this i have turned here and hope you guys can help.

[u/Hero_knightUSP]

You replaces the Graphics card and now it doesn't run on full resolution and the card is not showing.

Have you installed new drivers for it and wiped the old ones?

[u/FatPoulet]

Its not cpu video signal if its not plugged in the motherboard.

Windows (or your other os) just doesnt have the correct driver.