Pc games do not go?

I currently have some problems with my PC. I recently completely formatted it, yesterday downloaded all the games again. The first problem: Fortnite is started in the task manager also displayed but there's no picture. Have everything reinstalled, drivers updated, restarted, run as Admin and and and. Always the same even after windows update. Now I have bought GTA V what grad was on offer, I start the launcher and it happens nothing. At steam all games work normally. I have no idea what else I can do

Which graphics card driver do you have installed? From where?

Date WIndows 10 first time complete off with all updates. This can be done manually until Windows finds no updates. Additionally install all optional updates. Below that is also the current driver for the graphics card. Otherwise, go to the AMD or NVIDIA page and download the appropriate driver for your card and install it manually.

In Abdaten I imagine something else, you mean updating or updating.

Install Windows Updates

I have already done without success