OP here, posting this from my PC.
I managed to fix this somehow after 5 fucking hours of trouble shooting. Here's the entire process for anyone interested, maybe this helps you in the future.
-I wanted to see if the problem was an issue with the graphics card itself, so I took the GPU out and connected the monitor directly to the motherboard with a VGA cable, which didn't help (Could enter BIOS, see "starting windows" screen, but just black screen beyond that).
-Restarted the PC and selected safe-mode, before waiting for it to reach the black screen again I held my PC's power button for a few seconds and wait for it to shut down.
-Re-seated the GPU and switched back to the DVI-D cable that connects the GPU to the monitor.
-This time upon booting up I was met with a "repair windows" option, where I was able to complete a system restore. Everything seems to be working fine now.
Anyway, I'm not sure what it was, but I'd be wary of that NVIDIA update.