Unreal Engine 4 Games won't work on my computer.

This happened recently and I don’t know why and I really need help. I’ve already updated all of my graphic drivers and it still doesn’t work. I’ve also tried reinstalling the games and verifying game files. I get this message on 1 of the games: Screenshot - c525509daccab1c6092ea869d54806f5 - Gyazo

The Epic Games Launcher also refuses to open. It shows up in the taskbar but I can’t actually open it. Please help.