Hi! I am an Imac G5 user in Denmark. I have a problem with my screen and Apple would not come and look at it here so I would need to take my Imac to the nearest Apple center at 200 km from here! So I was hoping you guys could have some ideas about what is wrong with it, as there are replacement parts I can order online without visiting the apple center. So this is what happens. When the Imac G5 has been turned off or asleep for a little while, when I turn it on the screen is all screwed up: it slowly blackens from the left then changes into weird coloured geometric patterns and then it freezes. The fans start off like mad and I need to restart it. I need to restart it a few times before it stops freezing and it lets me log on. It passed the hardware test, I reset Pram Nvram, reinstalled mac os x, repaired permissions. What could be wrong?