All Unity 5 Versions Crash At Startup!

When I start up Unity 5, It always crashes for no reason!

If you have Lavasoft Web Companion installed, remove it, and you are going to delete a file called :
(if your computer is 64 bit, also remove :

Same problem here. Here is what you need to do:

Hold Ctrl key and click on the “Help” menu and select “Hard Exclude Apps”.
Input the names for Unity executable files.

find the solution check it here

I had a crash upon startup when starting from the unity icon. It worked however when I started my scene file. Do not know why, but worked.