Graphic card can't open UE4 games

Hi everyone,

Lately I bought Darksiders 3 on steam and tried to play it but the game just instantly crashes. I digged a bit into the problem and realised my pc can’t run any of the games that were made with Unreal engine 4 (My little nightmare has the same issue), and I can’t open the epic game store as well.

If I disable my graphic card (Nvidia Geforce GTX 970m) in the device manager and use the intel one instead, the games work (but really poorly because it’s not made for that…).

Why my Nvidia graphic card is incompatible with UE4 games ? How do I resolve that?

And before you ask me, yes my driver is updated.