These are classic symptoms of a corrupt installation disk. Try burning a new install disk and seeing how that goes.
EDIT: I see these are CD-ROMs. Don't know what to say unless there's a universal issue with your specific model number. Although, just as a last resort, you could try actually burning your own install CDs, just in case both of the ROMs you had were, by chance, corrupt.
Last edited by peter_89; 02-05-2006 at 03:57 PM.