Canon LBP7210Cdn Manual page 532

NOTE
If the printer driver is not installed properly
"The Printer Driver Cannot Be Installed or Uninstalled"
Restart your computer.
(1) Select the [Restart Computer Now (Recommended)] check box.
(2) Click [Restart].
NOTE
Removing the CD-ROM
You can remove the CD-ROM from the CD-ROM drive after the installation is completed.
When viewing the e-Manual
"Viewing the e-Manual"
"Searching for Information"