Hello HilamZion,
After upgrading your OS to windows 7 ultimate the quick launch buttons and audio do not work, is that correct? I will try to help you correct this issue.
HP manufactured well over 100 DV9000 series notebooks, I need the exact model of the one you have. If you are unsure where to locate that information have a look at this document for help.
Please respond back at your earliest convenience.
Thanks