All of a sudden today, the screen on my laptop started flickering. I didn't drop the laptop or anything...it just started out of the blue. Sometimes it flickers a lot and sometimes not at all. Does that mean I have a problem with my video card? If so, can video cards be fixed or replaced in laptops? I have a Sony Vaio if that helps...
Thank you!

Chowhound
Comic Vine
GameFAQs
GameSpot
Giant Bomb
TechRepublic