Blender will not start anymore All versions and also porteble version

Hi All,

I worked with blender for a few years know and since a week ago I can’t open blender.
first I tryed to downgrade to 2.76 then tested 2.48 2.52 but none off them work. (also tested a portble version with no luck):frowning:

here is the message i have

I’m working Win 7 PRO

thx in advice

Some things to check