Hit c at your grub screen to get a CLI. Type videoinfo at the prompt and check that your preferred mode is the correct resolution. If not then boot and uncomment GFX mode in your default grub and type in the correct resolution and update grub. This will not work unless the resolution is listed in the videoinfo list you just looked at but will if it is there.
TC
TC
All opinions expressed and all advice given by Trinidad Cruz on this forum are his responsibility alone and do not necessarily reflect the views or methods of the developers of Linux Lite. He is a citizen of the United States where it is acceptable to occasionally be uninformed and inept as long as you pay your taxes.