Windows Update searches online for the most recent product driver on the Windows Update site. If the online driver is more recent than the driver stored in Windows 7, the computer downloads and installs the updated driver. The Windows Update process takes place automatically. Therefore, you might not notice that the process is in progress.
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Resolving Printer Offline problem using the HP Print and Scan Doctor
Download the HP Print and Scan Doctor. ...
Run HPPSdr.exe from the download location on your computer.
Once HP Print and Scan Doctor is open, click Start, and then choose your printer.
It will check whether your printer is compatible or not.
I hope it helps you.