Did you try to load both Speedtouch and Belkin? Go back to RegCleaner and clean out anything Speedtouch/Belkin. Try disabling both your firewall and antivirus when attempting to install the next time. Sometimes security software will block the installation of legit software.Then only install the Belkin drivers. Make sure you don't connect the adapter until prompted to do so. Does this work? If not, clean again then reboot and run ChkDsk (just as I spelled it) in your Run box found in the start menu. This will go fast but it will take longer on step 2 if it needs to recover lost files. Then attempt to reinstall Belkin again (with security software disabled). Let us know what happens.