Boot into Safe Mode (F8 at startup), delete C:\Windows\System32\Drivers\sptd.sys , reboot, and reinstall DAEMON Tools with antivirus temporarily disabled.
When you install DAEMON Tools on Windows 7, it creates a "Virtual Drive" in your "My Computer" window. You can then "mount" an image file to that drive. To Windows 7, this looks identical to inserting a physical disc. This is incredibly useful for:
This is the most important section of this article. If you search for DAEMON Tools today, you will be directed to the official website offering "DAEMON Tools Lite 11" or newer.
DAEMON Tools is a virtual drive emulator. In simple terms, it allows your computer to treat a file (like an .iso , .bin , or .cue file) as if it were a physical disc inserted into a real CD, DVD, or Blu-ray drive.
If DAEMON Tools becomes problematic or unsupported, consider these lightweight alternatives that still work on Windows 7:
