How To Fix Start-Up Crash?

When starting up Fortnite, it will show the indication of the game loading by showing the little loading box and then the big vertical rectangle shows up with the logo. Then the screen goes black, sometimes for a few seconds and other times until I close it through task manager (in task manager, it says “Not Responding”), if it opens for a few seconds, then it closes automatically and then crashes with the crash prompt appearing. I have just recently upgraded to windows 10 and right afterwords I was able to play a bunch but then this happened. I have done everything from restart my PC, to uninstalling and reinstalling, and looking at the code, still no fixed issue.

yes i have this too!