IBook won't start up - black screen

Hi, wonder if anyone can help with this...
I have an iBook which is about 5 years old. It's always been fine up until this weekend when i turned it on as normal and it just won't start up. All i see is a black screen but it does for a while sound like it's trying to start up.
I left it for a day turned off then tried turning it on again - this time it looked as if it was starting with the grey screen & apple icon then half may through it froze and there are lines all over the screen in various different colours - this doesn't look like a good sign!
I've tried starting in safe mode and also by inserting the install CD and starting up holding C but neither register.
Any ideas???
Thanks in advance!
Abi

Hey AbiTWR,
.. starting with the grey screen & apple icon then half may through it froze and there are lines all over the screen in various different colours- this doesn't look like a good sign!
Unfortunately you're right about that. That's the classic symptom for a graphics processor chip that's coming loose. You could try the shim repair mentioned all over this board. Depending on the speed and size you basically put a shim under the board under the GPU.
Richard

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