After successfully updating to Windows 8.1 my Photosmart 6520 is not able to communicate with the computer via USB. The computer can execute a scan properly from the scanner software, but the printer/scanner cannot execute a scan from the control pad on the scanner. All Windows updates have been successfully applied. The drivers have also been updated to the correct version for Windows 8.1. The HP printer/scan dr indicates no problems when run. All devices have been powered off and rebooted. Any advice would be appreciated.
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