HP Scanjet G4010 and G4050 Scanners - 'Scanner initialization failed' Error Message Displays on the Computer Screen
When trying to use the scanner, if you receive an error message
use the following procedure:
Close the HP Photosmart software, if it is open.
Unplug the USB cable that connects the scanner to the computer.
Turn the computer off, wait 60 seconds, and then turn the computer on again.
Plug the USB cable back in.
Figure 1: USB Cable Connection
Make sure that the USB cable is connected to the back of the scanner correctly.
The USB symbol on the end of the cable (the connector) should be facing up.
When connected correctly, the USB connector will feel slightly loose. When
connected incorrectly, the USB plug will feel overly tight.
Try connecting the USB cable to a different USB port on your computer. If the
USB cable is connected to a port on the front of the computer, move it to a port
on the back of the computer.