Yeah, i just made a thread last night, I have the same problem.
It's a defective video card. Look at this post regarding it. Call dell and have them replace it.
Hey, my computer randomly restarts on HL2 sometimes. Is this a graphics card problem, do we know this for a fact?
Will dell send me a replacement?
Every game works fine , but for some reason, it randomly restarts on HL2 every now...