Aurora-R7, GTX 1080, error 43

My PC Info:

Alienware Aurora-R7
Processor: Intel(R) Core(TM) i7-8700 CPU @ 3.20GHz
Installed Memory (RAM): 16.0 GB
System Type: 64-bit Operating System, x64-based processor
OS: Windows 10

Graphics Cards:

Intel HD Graphics 630
NVIDIA GeForce GTX 1080

I bought an Alienware Aurora R7 PC a few months ago. It worked great for a while, NVIDIA graphics card included, but after a PC crash a month or two back, I've been having problems with the Graphics Card. At first, red dots started appearing (right after booting up the computer) that I couldn't get rid of, see here:

 After a while, I figured out restarting the computer after turning it on got rid of the red dots, but I guessed that was just a symptom and that the graphics card itself was still having problems. Occasionally, I get this for a few seconds before the Windows log in screen comes up:

 

 

 I also started getting "insufficient vram" messages when attempting to run some bench-marking software and found that my NVIDIA GeForce GTX 1080 had "0MB" of VRAM. Then, whenever I opened Photoshop, I kept getting this warning:

 

 

I didn't want to touch it while the semester was ongoing, but now that it's over I've done some more research. According to the Systems Info panel, my NVIDIA graphics card is a "problem device" which is why Windows blocked it from running. I've tried to uninstall and reinstall the NVIDIA drivers multiple times, used DDU to make sure I got everything, but the Error 43 code is still active.

 

 

I've looked through several forums and articles, but I'm really not sure what to do. Is this a software problem or a hardware problem? Do I need to get a new Graphics card? 

I'd really appreciate any help I can get.