Windows 7 VM installation drivers

Hi,

I have a problem regarding the installation of a vm windows 7. When I try to install windows 7 I need a driver for the optical drive scsi which is the viostor.inf, but the driver doesn't want to work even if I use the last version of the virtio-win (1.6.5).

I follow this procedure:

https://access.redhat.com/site/solutions/65576

but the result is always the same, I have a message which tell me that the driver couldn't be found.

Did you have an idea about the cause of the problem, or is there a step that I forget?

PS: Most surprising it's work fine with windows XP!

Cordially

Anthony