Canon LBP7210Cdn Manual page 104

Make sure that the printer and computer are off.
Do not turn the printer on during the following procedure unless instructed.
Connect the B-type (square) end of the USB cable to the USB connector on the printer.
Connect the A-type (flat) end of the USB cable to the USB port on the computer.
Step 2: Installing the Printer Driver from CD-ROM
Turn on the computer and start Windows.
Log on as a user with administrative rights.
IMPORTANT
If you are not sure about your administrative rights
Contact your system administrator.
If a wizard or dialog box appears through the Plug and Play automatic setup
Click [Cancel], turn off the printer, and then use this procedure to install the printer driver.