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You need to install sound driver in order to get it worked with your new operating system. Installing MSUAA before installing sound driver may help (try using Win Vista sound driver). Go to this link to download:
Try this site:
The 4730Z does not have bluetooth onboard. The bluetooth button is there because the 4930,model shares the case and some hardware with your 4730Z. hardware
with the 4930 which does have bluetooth. You will need to add an internal
bluetooth device or USB bluetooth dongle if you want bluetooth.