Uninstalling the USB Class Driver
10-Jan-2012
8200475800
Solution
Uninstall the USB class driver under the following circumstances.
- If the printer driver installed using a USB connection cannot be uninstalled properly
- If you cannot install the printer driver properly even after reinstalling it
1. Check the following.
- Check that the printer and computer are connected using a USB cable.
- Check that the printer is on.
2. Perform the following procedure.
From the [Start] menu, select [Settings] → [Control Panel], and then double-click [Add/Remove Programs].
From the [Start] menu, select [Control Panel], and then click [Add or Remove Programs].
From the [Start] menu, select [Control Panel] → [Add or Remove Programs].
From the [Start] menu, select [Control Panel], and then click [Uninstall a program].
From the [Start] menu, select [Control Panel], and then double-click [Programs and Features].
3. Make sure that [Canon LBP9100C] is not displayed.
(1) Make sure that [Canon LBP9100C] is not displayed in the dialog box.
(2) Click [ 
] to close the dialog box.
] to close the dialog box.
NOTE
If [Canon LBP9100C] is displayed
- See "User's Guide" (HTML manual) in the CD-ROM supplied with the printer and delete [Canon LBP9100C] in the dialog box.
4. Display [Device Manager].
4-A-1. From the [Start] menu, select [Settings] → [Control Panel].
4-A-2. Double-click the [System] icon.
4-A-3. Click the [Hardware] tab → [Device Manager].
4-B-1. From the [Start] menu, select [Control Panel].
4-B-2. Click [Performance and Maintenance] → [System].
4-B-3. Click the [Hardware] tab → [Device Manager].
4-C-1. From the [Start] menu, select [Control Panel] → [System].
4-C-2. Click the [Hardware] tab → [Device Manager].
4-D-1. From the [Start] menu, select [Control Panel].
4-D-2. Click [Hardware and Sound] → [View hardware and devices].
4-E-1. From the [Start] menu, select [Control Panel].
4-E-2. Double-click [Device Manager].
NOTE
If the [User Account Control] dialog box appears (Windows Vista and Server 2008)
- Click [Continue].
5. Double-click [Universal Serial Bus controllers].
6. Right-click [USB Printing Support], then select [Uninstall] from the pop-up menu.
IMPORTANT
Do not uninstall any other device drivers.
- If you uninstall them by mistake, Windows may not operate properly.
NOTE
If [USB Printing Support] is not displayed
- The USB class driver is not installed properly.
If the USB class driver is under [Other Devices]
- The USB class driver is not installed properly. Select [Unknown device], and then uninstall it.
7. Click [OK].
8. Click [ 
] to close the [Device Manager] dialog box.
] to close the [Device Manager] dialog box.9. Disconnect the USB cable from the computer, and then restart Windows.