Exported Premiere Video Not Playing all-of-a-sudden

[Colby27338707ar1h]

I've used Premiere for years. I pulled it up yesterday to edit a simple video for work, went to export it and realized it wouldn't play. It just shows this pixelated mess at the top of the screen, like it's trying to play, and a blank screen otherwise. I haven't changed any of my settings that I'm aware of. It won't play in Media Player or VLC. I've always exported the exact same way every time, with "Match Source - Adapative High Bitrate" and H.264 format. I also tried re-exporting videos that properly exported before and their newly exported versions won't play now. No idea why this is happening. 

[Peru Bob]

Try updating or rolling back your graphics driver directly from the video card manufacturer’s site. If NVIDIA, do a clean installation of the latest Studio Driver (NOT the Game Driver).

[Peru Bob]

Try turning off Hardware encoding in the Video tab of the export settings.