“Display Driver Stopped Responding And Has Recovered” error with Windows Live Movie Maker

I'm attempting to use Windows Live Movie Maker on a Windows 8 PC. The program opens fine, but upon trying to insert any videos, my whole screen immediately goes black for a second or two. When the screen returns, I'm presented with these two error messages [shown in attached photo]: "Movie Maker Has Stopped Working" and "Display Driver Stopped Responding And Has Recovered." I've used the program on this same PC for almost 5 years now and this has never happened before. But in the last 3 days or so, it does this every single time I try to use the program. And now it's getting to the point where the same thing has even started happening outside of the program. For example, opening up my web browser and trying to go to YouTube or Facebook will also cause the blackout and the "Display Driver Stopped Responding And Has Recovered" error (I use Google Chrome). It's extremely frustrating when I have a lot of important work to do and I can't use any of my programs because this keeps happening. Any insight or help as to how I can fix this would be appreciated.