Do you have video corruption when running Mac OSX and can you boot any other live distros?
If you have any other compatible video cards you can try swapping that out just for testing purposes.
The iMac I have is PowerPC so can't use on that but you have a chance, I couldn't confirm though.
If you have any other compatible video cards you can try swapping that out just for testing purposes.
The iMac I have is PowerPC so can't use on that but you have a chance, I couldn't confirm though.