Stuck on white screen at boot up
I'm trying to get this iMac back on it's feet and I'm guessing I'll need to buy some parts. But my problem is I need some kind of diagnostic check to narrow down what parts I actually need.
The problem I have is that on boot up the iMac gets stuck on the blank white screen immediately after the blank blue screen.
I've tried the following:
Safe Boot-hold down the shift key while booting, key must be held down till the gear shows up under the apple:-
This allowed me access to the OS and I repaired the disk but on normal boot up it got stuck on the white screen.
Boot to the Install DvD and run repair disk (holding C down during boot):-
Would not find the start up disk and stuck on the white screen.
Hold Command, Option, P and R during the boot process to reset NVRAM:-
Done twice but same result on boot up with white screen.
Now I'm out of options. I can't start spending hundreds on spare parts to see which is the offending party.
Any help much appreciated.
Is this a good question?