Im not sure how to check, but i know i didn't use the USB installation. don't suppose theres an IM system we could use?

I just found a post on different forum of someone having the same issue you are having with the same board and 780, he was able to fix it by flashing bios. I recommend that you go on you tube and watch some tutorials on how to update bios, try to find your board, if not any video with modern UEFI bios update will do, but basically you have  to study a little to understand whats going on, then when you feel comfortable, download newest bios from MSI for your board and do usb update, this should be done out of windows.
 
I just looked through MSI bios update instructions, there pretty straight forward, after you install live update 5, do a scan, but don't download everything it shows, select just the bios update and download that, once you have bios update file downloaded run it and select in DOS usb mode, select you usb drive in dropdown box, and hit ok and program will create bios update usb (make sure your usb is formated to FAT32 before you do this). Then restart in bios select your usb as primary boot device and boot from usb and follow on screen instructions.

Here is the link http://www.tomshardware.com/answers/id-1866881/newly-installed-asus-geforce-gtx-780-msi-970a-g46-computer-stuck-black-screen-bottom-corner.html
 
But since there are others that have the same issue as you its totally possible that bios update is the real issue, I would focus on updating your bios while your 780 gets replaced, watch some videos and follow msi instructions.

I seriously love this guy for staying with me. But anyway, using Live Update 5, the bios updated inside windows, which I' guessing was a big nono? I don't know how to revert that.

vdgamer
You do not need to revert anything, Im guessing its like lampinridcm5 said you probably installed some mobo drives, which is no big deal you can always uninstall them through control panel, but your bios probably wasn't updated, this is why I kept telling you to boot into bios and check.
 
Anyway just follow my second post on this page, MSI bios update instructions are pretty clear, and the reason why it was taking forever to download stuff through "live update 5" was because you were downloading all the crap it found missing after scan, but if you manually select just bios it shouldn't take long.

Exactly.
First thing you have to do is check BIOS revision.
Update if it needs it.
Very easy.
 
You cannot just guess that it was updated with that live update. You must check for yourself.
Boot into the BIOS and it should be pretty easy to find. I cannot remember where it is on my MSI UEFI BIOS.
I remember when you first booted up a PC the BIOS revision would be right there during POST.
Guess those days are gone.

Were you able to fix the issue?