Are Green pixelated lines signs of bad video card?
I just started having this problem today and have done some reading and think it might be my video card.
Problem: I started getting green pixelated lines across the video game I was playing (in Bootcamp). I booted into mac and found the problem was less severe but noticeable in the opening grey screen (faint reddish line shadows), Cover Flow (same green lines but less and fainter) and small areas of web pages. Then I checked watching a movie and it was severe, as in this link:
I ran Disk Utilities>Verify Disk. It told me to boot from disk and Repair Disk, which I did and it fixed. I then ran Repair Disk Permissions and Yasu. I also reset PRAM and then did Apple Hardware Test (both short and extended) which came back with no issues detected.
Reading a few threads on this forum I see it might be a video card or LCD issue.
I will try get another monitor to see what that shows when I connect, but in the meantime am wondering if anyone can confirm this just from the image? If it is a video card issue might it be fixable (as in running the fans to cool it more - another issue I've come across in the threads). Or is it time to upgrade my video card?
any help is appreciated! Thanks in advance
EDIT: I connected to external HDTV and the problem was not apparent. Still on the iMac, but not on external display
Is this a good question?