Unity stopped working

Since yesterday 8/2/15 my unity 5 stops working on opening and I get a message saying Unity wont work with windows. is there a reason for this?

Hi there,

Can you screen capture what the exact error is? and attach it to your reply?

Unity wont work with windows is too global to give a correct and functioning solution to,
so I’d like to see what specifically causes this, or at least what unity’s error system will claim it is.

Thank you.