Ue4 Keeps crashing right after the Editor Opens

Whenever I open a project, no matter what version it is, I get to the editor, and then there is a weird sparkle effect (image down below) and then the editor freezes. If anyone else has solved this problem and could give me advice about this that would be very much appreciated as this has made the engine completely unusable.

Thank you for your help and if you need any log files, system information etc. please tell me.
Thanks!