HP Photosmart C6340 All-in-One Printer - Manual (Page 214)

6. Insert the product CD-ROM into your computer’s CD-ROM drive and then start
the Setup program.
NOTE: If the Setup program does not appear, locate the setup.exe file on
the CD-ROM drive and double-click it.
NOTE: If you no longer have the installation CD, you can download the
software from www.hp.com/support .
7. Follow the onscreen instructions and the instructions provided in the Start Here
guide that came with the product.
After you have reinstalled the software, try to scan again.
Cause: The software installation was not complete.
If this did not solve the issue, try the next solution.
Solution 2: Refresh the Windows Device Manager
Solution: Refresh the Windows Device Manager.
To refresh the Windows Device Manager
1. On the Windows taskbar, click Start, right-click My Computer, and then click
Properties.
2. Click the Hardware tab, and then click Device Manager.
3. Double-click Universal Serial Bus Controllers.
4. Click USB Composite Device, click Action, and then click Uninstall.
If a screen appears to confirm the deletion, confirm the deletion.
5. Disconnect the USB cable from the product.
6. Wait a few seconds, and then reconnect the cable.
This should restart the Windows device detection (Plug and Play). A New
Hardware found screen might appear.
7. Click Next through all of the screens that appear in the Wizard to install the USB
Composite Device.
8. Click Finish to complete the installation.
9. Try to scan again.
10. If these steps do not resolve the problem, try using a different USB cable to
connect the product to the computer.
NOTE: This solution is not applicable when the product is connected to the
computer via LAN.
Cause: Communication problems between the product and the USB controller
caused this error to occur. This might be caused by an incomplete installation, a USB
cable longer than 3 meters (9.8 feet) in length, or a defective USB cable.
If this did not solve the issue, try the next solution.
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