HP EliteDesk 800 G1 Tower Service Manual page 229

Printer will not turn on.
Cause
The cables may not be connected properly.
Printer prints garbled information.
Cause
The correct printer driver for the application is not installed.
The cables may not be connected properly.
Printer memory may be overloaded.
Printer will not print.
Cause
The printer may be out of paper.
Solution
Reconnect all cables and check the power cord and electrical
outlet.
Solution
Install the correct printer driver for the application.
Reconnect all cables.
Reset the printer by turning it off for one minute, then turn it
back on.
Solution
Check the paper tray and refill it if it is empty.
Solving printer problems
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