Error Failed to initialize Unity Graphics

Unity Engine
1

When installing unity I get a window with this message “Error Failed to initialize Unity Graphics”. I have installed on two windows 7, 64 and 32 bits. I have installed previous versions … I can not understand what happens. Let’s see if anyone can help me, thank you.

2

Please, help!!:frowning:

3

So previous version works? Which version is that, and what version you try to install?

4

I have meant unity 5

5

5.5.3, 5.5.2, 5.5.1