Follow the procedure described in your setup manual to reinstall the MP Drivers.
If the MP Drivers were not installed correctly, uninstall the MP Drivers, restart your computer, and then reinstall the MP Drivers.
→ [ Deleting the Unnecessary MP Drivers ]
If you reinstall the MP Drivers, perform [Custom Install] on the Setup CD-ROM, then select [MP Drivers].
If the installer was forced to be terminated due to a Windows error, the system may be in an unstable condition and you may not be able to install the drivers. Restart your computer before reinstalling.