may be too late, but,
I was successful installing a Casio
Privia PX-575R USB midi keyboard to Windows 7
I tried to use Yamaha, Korg, M-Audio, and some other drivers I don't
they did not work.
I then downloaded the win 7 x64 driver for PC-50 from
(but I bet any of them would work) from Roland. All I did was change
the hardware ID
in the INF file under
The ID is after the comma and the one you see above is from the Casio
keyboard i have. The
hardware ID for your keyboard can be found in "device manager". Just
hardware/keyboard and go to "details" and choose "hardware id" from the
menu and put that after the comma. It will start with "USB" since it is
devise. There may be more than one ID but the first one works for me.
Then just do
a manual install by right clicking "computer" or "my computer" and click
manager" tab. Then find your keyboard (probably a yellow exclamation
mark next to
it) and double click it. Then go to the "driver" tab and click "update
Then choose "Browse my Computer for driver software", then "Let
from a list
of device drivers
my computer", then "Have Disk..." and browse for
the INF file
you just put the hardware ID in and click "open".
You now have a working Casio keyboard for a 64 bit or x64 windows 7
You can do the same with Vista x64 or XP x64
just download those
drivers and edit the hardware ID the same way.