Thank you for the breakdown. I’ve learned a fair bit about the infrastructure of my computer and Linux since posting this, and I’m now dedicated Ubuntu with only needing to do some very minor work with WINE here and there in the last two weeks or so. Linux has been a blast and learning about everything has been a lot of fun so far.
My problem turned out to be something with the BIOS. I don’t know if a switch got flipped somewhere along the way or what, but when I reset the BIOS to factory default settings in the boot menu I no longer had issues with boot looping and a CPU I could fry an egg on.
I do believe that GRUB was initially installed on sda2 and not sda, and Windows was just taking precidence over grubx64.efi upon startup. Now that I’ve scrubbed windows from my PC I no longer have any issues booting up and my PC seems to run just about the same as before, less a few graphical funnies with some larger proprietary software I use.
Funny enough, I tried to do a clean install of Debian with KDE on my system and I went back to having boot issues, mainly where it would just open to GRUB CL and I couldn’t get it to initialize Debian, when I was certain it was a good install. So I’m just going to stick to Ubuntu for a good while and learn it. Once I feel very confident in filesystem maintenance, command line navigation, snap/flatpak/.deb/whatever, all the major things, I’ll start shopping around for another distro again. Ubuntu has been treating me very nicely though.