Gray window when opening Unity

I just installed Unity and when i try to open it; Unity window opens and it’s just gray.
It is Unity 5.1.1f1
I have windows 7.

Try installing an older version of Unity, such as Unity 5.1.0 .

The fix for Grey-Window is disable DX11.

That doesn’t look like a grey window though. Its black.

Try forcing a different mode like dx9 or opengl in command line.

The other thing is normally that the window is internet blocked and is simply not updating. Probably as its trying to contact the license server.

Try starting in Offline mode or disabling your network adapters altogether before you load the program. You must install AND load in Admin mode.