Unity 5.4.0f3 (64-bit) Crahed on startup!

hey guys my Unity 5.4.0f3 (64-bit) Crashes Everytime i Start it up i tried reinstalling unity still crashing on startup
i tried reinstalling my VideoCart Still nothing
i Did A DXdiag Check its up to date
nothing seems to work i did do a clean reinstall of everything

unity crash Report

C:\Users.…\AppData\Local\Temp\crash_e8cdb65581852f45b8c7003df8b9c0e3.log
C:\Users.…\AppData\Local\Temp\crash_e8cdb65581852f45b8c7003df8b9c0e3.dmp

and the thing is that i did not do enithinh in the firstplace it just crached out of the blue.
does enyone know how to fix this

I found this in an old unitytopic. See if this helps

By default, Unity always loads up the last project that you edited, but you can override this by holding down “Alt” while unity starts. Press and hold it quickly after launching unity, and you’ll get an option to select a different project or start a new project.

If the problem is with the project, then this will help make unity usable for you again, although it doesn’t much help find out what the actual problem is.

For that, try looking at the Editor.log file after unity crashes which can be found here:

OS X

~/Library/Logs/Unity/

Windows XP

C:\Documents and Settings(current user)\Local Settings emp\UnityWebPlayer\log

Vista/Windows 7

C:\Users(current user)\AppData\Local\Temp\Low\UnityWebPlayer\log

If this still does not help you, and you are on a windows box, you should check your DEP-settings. DEP is short for Data Execution Prevention (How to handle DEP in Windows Vista and in Windows 7) and, as the name implies, might prevent an application from running properly.