graphic artifacts?

[CaoCao]

I'm getting this horizontal bar that changes colors and sometimes the whole screen image looks like it is vibrating rapidly up and down, I'm utterly at a loss. The model in question is an Early '09 with the 9400M IGP. It just randomly started last night.
I've already had a video issue that got fixed, I think it was the GPU

 

[Detrius]

If you just got it fixed, you have a warranty, so why ask? Just take it back.

Horizontal bars tend to mean graphics card.

 

[wywern209]

Go to the genius bar asap. That is definitely your graphics card.

 

[jasonh427]

Hey

is this the same as my previous post??
https://forums.macrumors.com/threads/1005232/