Is this video card problem?

[GJohn]

I have been suggested that its either monitor is gone bad or the dvi cable. This happened 3 days in a row. And this past two days i haven't noticed it. Thought it might be the video card because it also gives artifacts in games.





Red line moves around, it would sometimes go up and down, side to side. And its like always flashing.

Same with the small green, its like flashing.