Try a manual install of the driver. Do a search for the driver, depending upon whether you are using 64 bit or 32 bit. Also check your device manager. If the DX90 shows up there with a ! then click on it, go to driver and do an install and use manual to find the driver, which is fairly easy. Yes, this is what I did. I run a Mac but am using Parallels so I run Windows 7 on my Mac. Some seem to have the driver install right away, some a few more hoops.