Select My Digital Flat Panels from the left hand menu, select Scaling Options (Digital Flat-Panel) from the sub-menu. Move the bar to change Underscan-Overscan option to the value that will make the image appear full screen ( 0 will show full screen). Click Apply to save the changes.
I just updated the BIOS on the Dell 9020 to version A25 but now when I open the BIOS screen it's too wide for my display and I can't access any of the options in the BIOS.  Is there a fix for this?  I noticed some older BIOS versions are available though so should I install one of those to fix the issue?  Thanks in advance.
Dell 9020 BIOS screen too wide for my display