So I think this might be a common problem where players might play BG:EE for a few days then for reasons unknown when they try to launch it, they get a white screen and the first couple of seconds of music plays but then they get a crash. That is at least what happened to me anyway. By accident I found that I could get into BG:EE with it working perfectly fine. The only thing I did was go into the C:\Program Files (x86)\Baldur's Gate Enhanced Edition\Data\00766 and Launch Baldur.exe TWICE.. As in I just clicked really fast and it opens multiple instances of Baldur's Gate Enhanced, that somehow makes it work for me..
I'm not sure if this is the correct format/category for this, I didn't really know where to find stuff on startup crashes but hopefully this might be useful and may work for a few of you who have similar problems to this .