images appearing on screen and locking up Imac G5
I believe the video card on my Imac G5 has gone as it reveals many images all cross the screen which freezes the machine.
Now when I try to start up all I get is the grey apple logo and spinning gear - nothing more.
Is there a diagram showing where on the motherboard this video card is and can it be replaced.
Also how can the complete board be replaced and how much will it cost? please