No GUI loads, and graphic settings won't change!

How do I fix this?

Can you be more specific?

When I start gmod all the text has black boxes surrounding it. All “Grey boxes” (Settings for an inst.) are gone, so if I try to spawn something or change video settings I only see floating text.
Also I can’t see what weapon I’m selecting, nor can I see blood, or crosshairs.
Also I can’t change ANY settings.
That’s what I can remember