HP Photosmart C4344 All-in-One Printer - Manual (Page 238)

Solution 3: Disconnect and reconnect the USB cable
Solution: Disconnect the USB cable from the computer and product, and then
reconnect it.
To disconnect and reconnect the USB cable
1. Disconnect the USB cable from the product.
2. Disconnect the USB cable from the computer.
3. Leave the USB cable disconnected for 5-6 seconds.
4. Reconnect the USB cable to the product and the computer.
After reconnecting the USB cable, the product should start printing the jobs in
queue.
NOTE: If you are connecting the product through a USB hub, make sure the
hub is turned on. If the hub is on, try connecting directly to your computer.
5. If the product does not start printing automatically, start another print job.
Cause: The USB cable needed to be disconnected.
If this did not solve the issue, try the next solution.
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