IMac G5 Screen Freaking Out

Question

When I first started playing the game Command and Conquer Generals: Zero Hour it was working fine, but about two months ago, during the game the screen went all fuzzy, like i could see the pixels, it also looked like someone had taken a black marker and slashed it across the screen. I restarted the computer, and it worked fine. i just thought that it would never happed again. But a few days ago it did the same thing three times in the same day. I don't know if it is the game, because it only happens while playing that game, or if it is the computer, because even when i close the program, the screen is still messed up. Also, sometimes my computer freezes when i play the same game. Can someone help me.

Answer 1

I had a very similar problem to this.
i have a G5 iMac iSight.
where my screen would freeze and to put it simply, everything would look pixelated.
this would typically happen when i would be puttin a CD in the drive with iTunes open. typically, the freeze is immediately preceeded by something similar to a "pop" sound.
after a similar freeze with iPod running into the stereo, i've come to think that this problem is most likely static shock. the pop must have been static electricity from my fingers...anytime i touched my iPod when running into the stereo i would get a shock, which would sometimes freeze its screen.
I'm assuming that these two issues are the same. Now, just to be sure, i touch the metal plates on the bottom of the iMac every now and again to draw out any static that may have built up.
not sure how this might relate to your issue with the game, though.
iMac G5 iSight   Mac OS X (10.4.6)