Thank you very much friend for your help.I would not worry about the ACPI errors at this point.
The problem with your graphics is the Nvidia card. You will have to install the correct driver for your card.
I'm not on Ubuntu at the moment but believe there should be a tab in the software install that says something like additional drivers. click on that and see if it offers you a recommended driver to install. It will depend upon the card model and chip set.
Perhaps someone will come along that has a running ubuntu install to be of more help.
If you don't find it there do a search for additional driver tool.
Thank you very much friend for the reply.Welcome to the forums,
there are several possible problems you may be having,
as eluded by @kc1di did you tick the box for installing nonfree drivers when you tried to install,
what application did you use to burn the ISO to the pendrive [Rufus is known to be problematic, try Etcher https://www.balena.io/etcher]
use a good quality branded pen-drive [old/worn budget ones they are fine for normal use, but known to be unreliable with ISO's]
for a general guide to installing, see my signature
If it's a Windows 8/10/11 machine, make sure you disable fast boot [usually in the BIOS] and secure boot then re-boot the machine before you continue.
if you have driver problems after a successful installation, we can guide you through the necessary fixes.