I understand clearly how difficult it can be for a user to start using
GNU+Linux Trisquel or similar distributions accepted by the FSF.
We are actually doing our best to support such users, we are even working on
a user guide.
The issue here arose not because of the way you do things, nor because of the
way we do things, but because of the way Microsoft does things.
If you don't want to read about some of my history, and some of the GNU+Linux
terminologies, go the the last paragraph.
I use GNU+Linux since 2007, it was just on 2011 that I begun using the
distributions accepted by the FSF, and so I heard about the implications of
having UEFI enabled.
To tell you the truth, I'm not a technology savvy, and I have also faced
problems earlier (who didn't?). I prefer to have a stable and productive
operating system (in which GNU+Linux Trisquel fits best for me), than
changing repository sources (places where the installed package managers can
look for packages), bootloader configurations (GRUB is a bootloader, as well
as the other one from Microsoft, if I'm not mistaken), and driver options (we
call the drivers as modules in the GNU+Linux terminologies, just be careful
when asking for [Vendor name here] modules, which is different from asking
for modules for [Vendor name here]).
Since 2011, I discovered that the BIOS used by the motherboard of my computer
has the ability to use UEFI, so I disabled it, because I don't like to use
UEFI nor to use Microsoft Windows operating systems.
I should note that, even if we do help you with such problems, we won't
probably go further because it sometimes involves the use of non-free
software.
Best regards, ADFENO.
Have a nice day.