Im having this problem with both CSS and HL2.
First of all, when I enter the menu of HL2 I get this:
http://oxihosting.com/files/50/halflife%202/1.jpg
And when I start a game, I get this:
http://oxihosting.com/files/50/halflife%202/2.jpg
I have no idea what's going on.
But I think this used to be a common error when the game just had been released.
I've attempted to fix the problem by removing the clientregistery.blob, changing graphical options, and restarting the computer.
No luck
It was solved somehow, but I can't remember how, and I'm not sure what to google.
Does anyone know how to fix this?
It wasn't like this earlier today, nor yesterday.
Edit: Turns out the problem is bigger than I thought.
I have graphical problems with all HL1 related games also (run through steam).
I get small red lined patterns all over the screen.
I've never seen anything like it