So, if you want to print, the printer must be online. Offline method doesn't work to print. When the computer sayst that the printer is offline, it means ypur printer is turned off or you don't connected the printer to PC.
As in conclusion, if you want to print set the printer online.
The most important part of this is taking off the rear door / duplexer and cleaning the two rollers that you can just see inside the printer with the back off. Those two rollers inside the back of the printer (not the ones in the door or the ones hanging out the back when you take off the rear door) are the ones that pick up the paper and feed it up into the printer. Those rollers are hard to get to - long qtips are strongly suggested. If those get rollers dust or gunk on them, they get smooth and don't pick up paper as well.
Click the link for detailed instructions - don't just go with my summary of the solution.
This video is for the C7280, but the instructions are supposed to be true for the 8250. Usually that message when you have paper means that the rollers in the printer are slick and not picking up paper. The video shows how to fix that.
The following are common issues. The following ink cartridges cannot be used after device initialization and must be replaced Cause The wrong ink cartridge(s) are installed. Solution The indicated ink cartridge(s) cannot be used after the device has undergone first time setup. Replace the ink cartridge(s) with the appropriate ink cartridges for the HP All-in-One. To find out the reorder number for all the ink cartridges that the HP All-in-One supports, see the printed documentation that came with the HP All-in-One. If you are using compatible cartridges make sure they are reset for use. Ink cartridge problem Cause The indicated ink cartridge(s) are missing or are damaged. Solution Replace the indicated ink cartridge(s) immediately so that you can resume printing. If there are no ink cartridges missing from the HP All-in-One, the ink cartridge contacts might need to be cleaned. If there are no ink cartridges missing from the HP All-in-One, and you still receive this message after cleaning the ink cartridge contacts, you might have a damaged ink cartridge.
Applicable error codes This document applies to Ink System Failure error messages with any of the following codes: 0xC19A0001, 0xC19A0002, 0xC19A0003, 0xC19A0006, 0xC19A0008, 0xC19A0009, 0xC19A0013, 0xC19A0014, 0xC19A0015, 0xC19A0020, 0xC19A0021, 0xC19A0022, 0xC19A0023, 0xC19A0024, 0xC19A0025, 0xC19A0026, 0xC19A0027, 0xC19A0028, 0xC19A0030, 0xC19A0033, 0xC19A0034, 0xC19A0035, 0xC19A0036, 0xC19A0037, 0xc19A0040, 0xc19A0041, 0xc19A0042, 0xC19AC001, 0xC19AC002, 0xC19AC004, 0xC19AC008, 0xC19AC010, 0xC19AC020, 0xC19AC040, 0xC19AC063, 0xC19AC080, 0xC19AC0a5, 0xC19AC0c6, 0xC19AC0e7, 0xC19AC100, 0xC19AC129, 0xC19AC14a, 0xC19AC16b, 0xC19AC18c, 0xC19AC1ad, 0xC19AC1ce, 0xC19AC1ef, 0xC19AC200, 0xC19AC231, 0xC19AC252, 0xC19AC273, 0xC19AC294, 0xC19AC2b5, 0xC19AC2d6, 0xC19AC2f7, 0xC19AC318, 0xC19AC339, 0xC19AC35a, 0xC19AC37b, 0xC19AC39c, 0xC19AC3bd, 0xC19AC3de, 0xC19AC3ff, 0xC19AC400 HP Photosmart C6380 and others Hi There there to much to tell you what to do but I found a link for you to see it will tell you what to do just click on the link it will take you there. http://h10025.www1.hp.com/ewfrf/wc/document?docname=c01458034&lc=en&dlc=he&cc=il&lang=he&rule=6783&product=3655608 Please come back and just gave a vote, it will gave me some satisfaction to know am helping some one so I will keep on helping.
All The Best: Pineworks