[HELP ME PLEASE.] Unity 5.1.2f1 Windows 8.1 Crash at Startup w/ crash log

Hi, i keep trying to open unity 5 and everytime i do the splash screen comes up with the unity logo and then it goes to a blank white little box, nothing in it, hangs for about 3 seconds (Varies each time) and then says "Unity Editor Has Stopped Working" with no other error codes or nothing. I tried -force-d311 thing and all the other commands like it, and nothing worked, same outcome each time. I tried reinstalling, to no avail, and i tried different versions.

log: http://pastebin.com/EdG5A5Yh

Thanks for reading.