My computer originally came with Windows 10. I decided to partition the disk in Ubuntu 20 and Windows 10. Both operative systems worked fine for 2-3 months, but one day Ubuntu just did not work anymore. When I turn on the computer and select to start with Ubuntu, the screen shows its brand, and then it stays black and nothing happens, I cannot come back and the computer does not obey any order, therefore I must unplug the computer. When I select to use Windows it works fine, it starts fast and there is not problem.
Do you know how to fix and recover Ubuntu? I have a couple of files in that partition and I would like to recover those.
Edit: The computer is Del (OptiPlex 7070). The processor is Intel (R) Core (TM) i7-9700 CPU@3.00GHz 3.00GHz. It has an operative system of 64-bits. Windows version is 1909. The video card is Interl (R) UHD Graphics 630. I am not sure if the system did updates, but I took these pictures of the settings of UEFI.