Nothing running Unreal Engine launches on my computer.

Anything running UE crashes when I try to launch it. Dead by Daylight, Rocket League - even when I try to launch UE 5.0, it crashes. This has been happening for about a month and a half, and everything used to work completely fine. I have reinstalled the games, verified game files, and even reset my PC, and still not a fix yet. Any help would be hugely appreciated.