Re: driver installation failed could not find media device for this driver windows 7 (32 bit)
I recommend you to go to Device manager and check if there is yellow exclamation mark next to audio. If yes, right click and go to properties and click Update driver. When in asks to browse, locate the file stored on the desktop and install.
Note: Use the same file (audio driver) you mentioned in the post and save it on the desktop before performing the above step.
Revert for further queries.