Môže.. tu sa to riešilo:

1. Uninstall DT via Start menu -> All Programs -> DAEMON Tools -> Uninstall menu item. Or remove DT folder.
2. Download SPTD driver setup from Disc-Tools.com Uninstall SPTD using downloaded file.
3. Restart your system.
4. Start regedit.exe (standard system registry editor) and delete "HKLM\System\CurrentControlSet\Services\sptd" key. Correct key's permissions if it's necessary (via key's right-click menu).
5. Restart your computer.
6. Install DT.