Unknown monitor after upgrading BIOS

Solving one issue(CPU fan error on boot) I’ve created another.

I reset my mobo completely to defaults as well as upgraded my BIOS.

But know when I boot into ubuntu my monitor isn’t recognized.

Only see default resolution of 1024x768 and unknown monitor.

Should see default resolution of 2560 x 1440 pixel on my Dell 27".

Can you show a screenshot of your monitor preferences?