Canon LBP7210Cdn Manual page 119

If CD-ROM Setup appears, click [Exit].
Select the method of installation.
If the following dialog box appears
(1) Select [Install from a list or specific location (Advanced)].
(2) Click [Next].
If the following dialog box appears
(1) Select [No, not this time].
(2) Click [Next].
(3) Select [Install from a list or specific location (Advanced)].
(4) Click [Next].