HP 1312nfi, display will not come on at all. When I power up the printer, the ready light is solid green and the light below it is solid orange. The printer makes sounds as if everything (rollers, etc) are going to function fine, but the display will not come on and both lights stay solid.

SOURCE: What does yellow flashing lite on top right of deskjet 670C mean.

It indicates paper jam or out of paper. Try to see if somethings stack up inside.

regards,
-engrkoiled-

SOURCE: Catridge light and Data aresolid orange when machine turned on

This is a problem, sorry to say. The Mark Encoder is not being detected. In laymans terms this means that you need a new carrage. Part Number is C4713-60039. You also need to check on the condition of your belt at the same time. Is there somebody in your area that can do the work or are you capable ?
Dave

SOURCE: The printer has a solid green ready light, a solid

Try removing the jetdirect and power cycle the printer.

SOURCE: HP deskjet 970CXI shows solid green + orange

http://h10032.www1.hp.com/ctg/Manual/bpd08643.pdf
See p 66 for which lights are flashing.

SOURCE: hp printer model M1522nf displaying permanent

HI,

This a formatter failure, sounds like the formatter went out while trying to do a hard reset or after updating the firmware,
Try doing a nvram:
Turn the printer off and hold the down arrow and the cancel button
Turn the printer on while holding the two buttons down
Continue holding until you see the permanent storage message and wait for the ready message to display

If this doesn't work call hp and tell them that printer is frozen and will not initialize, this is due to a formatter failure. If it has been less than 2 years since the purchase date then you will apply for a service note and will be able to have the printer serviced for free, Contact hp's tech support at 1800-334-5144.

Al