Video Card Problem?

I’ve had my laptop for about a year and a half. The other day I was playing warcraft 3 and verticle green dotted lines showed up all over the screen. When i exited the program they were alson on the rest of windows but were black lines. Now I get them all over the place in random areas. It looks like random areas on the screen get black or white pixels. Is my video card going bad? Motherboard? Any ideas?