I have just re-installed Windows 10 on my computer. Before that, Unreal Editor was working fine.
Now I try to load a project that was working before, but each time I load it in the Editor the editor crashes! Every time.
I have allowed the Crash Reporter to send the diagnostics: MachineId:A7FF11294191A4C2B726CDA2D10CDC50
Can someone have a look please? I have tried uninstalling and reinstalling the Engine but no luck 
Hey Brak22,
I found your crash and have entered UE-21504. The crash doesn’t appear to be Win10 specific though.
Are you launching a specific project or just the “New Project” window? Can you grab your logs for the project you’re trying to launch? It’s not attaching them to the crashes.
-.
Can you run Windows Update if you haven’t as well? Some users have reported success updating Win10 lately.
I was experiencing other D3D issues as well. For example, windows were not redrawing after they had been invalidated. I was also getting stutters in DX11 games. So I had to re-install Win10 completely. That fixed all the problems including the UE4 problem.
I think something went wrong with the DX11 portion of Win10 install… Probably put it down to that,