Welcome on board. There's a thread on the first page of this forum...

Has anyone gotten a Marantz RC9500 recognized in Windows 7 x64?

This thread has several tips.

There is also thread that was at the top of the forum when you posted entitled

Device not connected properly

which is for a TSU7000. The Marantz RC9500 is a branded TSU7500 with different case and fewer hard buttons. But essentially, they use the same driver. So,


Other tips can be found in searches for Window7 or Vista and 64 bit

You will need to use Virtual PC in 32 bit mode or VMWare in 32 bit mode as you will never get 64 bit driver for RC9500 as Philips has shut down the Pronto Division.