Issue with Vive VR and Unreal Engine

I am having an issue, I can not play any Unreal Engine VR games on my machine. I have windows 7 with a gtx 980 ti asus card, vive VR. I have all my drivers up to date. The games i can not play Yore VR, Solus Project, sportsbar VR and Trials on Tatoonine. Now i can play anything that doesnt have a unreal engine. Tried all of these in admin mode too.

So yesterday i downloadedEpic Games Launcher for the unreal engine… and i cant run that either.

I used to be able to run Sportsbar VR (virtual pool) but now i cant.

Does anyone have any ideas.

Thanks ahead of time and Merry Christmas.