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I couldn't get things working for me so I found this (Got It From ATI) Use this Command Line start /wait %systemdrive%\AcerV5900\ATI\Setup.exe /K Substitute the file path for where ever you extract the driver files. So to recap. Download the drivers from ATI/AMD. Extract them into a directory, I just ran the .exe which extracted the files and then canceled before the actual install process took place. Then run this command from unattend.txt or in a batch file that you have unattend.txt run after GUI mode of install has run. Thought I'd share it as I wasn't quite following the other stuff.