How do I troubleshoot basic connection issues with my HP Deskjet 1110?
First, make sure the power cord connections are secure and the printer is powered on — the Power button should be lit. Also ensure the USB cable connections are secure and the printer is set as your default printer. Windows users can visit HP Diagnostic Tools at www.hp.com/go/tools to fix common printer problems. (Page 1)
From the official HP Deskjet 1110 Printer manual, page 1
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