Our HP 8250 had a paper jam, as indicated by the error sent to our laptop. We located the jam, removed the paper, but the error still occurs. However, the actual printer does not turn on. We only see the error on our laptop when the ethernet cable is connected. Any fixes or troubleshooting tips you can provide would be great!

Device error An internal error occurred in the device. Press (Select) to resume the job. - Door open The printer door is open. The door must be closed before printing can continue. - Engine comm. error The device experienced an internal communication error. This is a warning message only. Job output might be affected. - Invalid driver You are using the incorrect printer driver. Reselect the printer driver appropriate for your device. - Invalid entry Invalid data or response. Correct the entry. - Jam in Cartridge area A paper jam has occurred in the print path. Open the door and clear the jam. Then press the (Select) button on the control panel - Jam in Output bin A paper jam has occurred in the output area. Clear the jam, and then press the (Select) button on the control panel. - Jam in print paper path. A paper jam has occurred in the print path. Open the door and clear the jam. Then press the (Select) button on the control panel. - Jam in tray 2 A paper jam has occurred in Tray 2. Clear the jam, and then press the (Select) button on the control panel. - Jam in tray 3 A paper jam has occurred in Tray 3. Clear the jam, and then press the (Select) button on the control panel - Load paper The HP Color LaserJet 1600 printer is out of paper. Please load specified paper type into the tray indicated. - Load Tray X [TYPE] [SIZE] The printer is processing job, but the tray indicated is empty. Please load specified paper type and size into the tray indicated. - Manual feed The printer is waiting for paper in the tray indicated Load the paper as indicated. - Memory is low The device memory has been almost completely filled. Allow the device to finish the job, or press (Select) to cancel the job. Break the job into smaller jobs that contain fewer pages. - Misprint The printed pages have been incorrectly placed on the paper. To continue, press the (Select) button on the control panel.

Thank you contacting FixYa for your printer inquiry.
This error is associated with either a sheet of paper blocking the paper path or a partial piece of paper that blocks path or trips a sensor. The printer will usually throw up a error code 13.XX on the display and the XX is a number that will indicate where in the paper path this error most probably occurred. Just follow the steps for your error on the below chart.
This link will take you to the user guide which will be helpfull identifying components and providing guidelines for most of the helpful hints and things you will need to know about this printer.
http://bizsupport2.austin.hp.com/bc/docs/support/SupportManual/c00218691/c00218691.pdf
Locate your error on the matrix below and follow the steps. Comment back if you need more help. Thank you again for contacting FixYa.
TF
HP Laserjet Error Codes 0 - 19 Message on printer Display Panel What it means. What to do. 13.XX PAPER JAM [LOCATION] Media is jammed at the specified location (and possibly at other locations). If the message persists after all jams have been cleared, a sensor or sensor lever might be stuck or broken. For all jam messages, do the following: 1. Remove jammed print media from the specified location. Check the entire paper path for other pieces of media in the path. 2. Open and close the top cover to clear the message. 3. Check sensors and flags in the paper path for proper operation. 3.0 PAPER JAM [LOCATION] A non-specific paper jam occurred. 1. Remove jammed media from the specified location. 2. Verify the paper tray is fully closed. 3. Inspect and/or replace the feed and separation rollers. 4. Ensure there is no obstruction in the path, such as a torn piece of paper. 5. Open and close the top cover to clear the message. 6. Check sensors and flags for proper operation. 13.1 PAPER JAM OPEN INPUT TRAYS Paper-delay jam at paperfeed area. 1. Ensure that paper trays are loaded and adjusted properly so media can feed from the tray. It might be necessary to reduce the stack height of media in the tray. 2. Check the input area for obstructions such as media in the path. Also check to see if the registration assembly damaged or unseated. 3. Replace any defective sensors or flags. 4. Verify the media meets the specifications. 5. Check the pickup feed and separation rollers for unusual wear. Replace as needed. 6. Rotate the media in the input tray by 180° and/or turn it over On NX engines this is most likely the fuser flag or the ACPM. The ACPM has a photosensor hard-wired to the back of it. 13.10 PAPER JAM CHECK DUPLEXER Jam at duplexer. 1. Check the duplexer and the rear area of the printer for obstructions or damage. 2. Check the duplexer for proper operation. Replace the duplexer if a sensor is defective. On a 5si, 8000, or 8100 series laserjet a Duplex Jam can be caused by a tray 2 and 3 feed assembly failure. 13.14 For Laserjet 5si. This error is caused by a defective paper control PCA Replace paper control PCA. 13.2 PAPER JAM OPEN INPUT TRAYS Paper-stopped jam at paper-feed area. 1. Check the input area for obstructions such as paper in the path. Also check to see if the registration assembly is damaged or if the transfer roller is out of place. 2. Replace any defective sensors or flags. 3. Ensure the media does not exceed the maximum length. 4. If multiple sheets are feeding, it might be necessary to fan the media and reduce the stack height. Also, replace separation pad. 5. Verify that the fuser is properly installed. On NX engines this is an input jam. 13.20 PAPER JAM CHECK REAR DOOR Media stopped in the paper path during power on or when the top door was closed. 1. Remove all media in the paper path, and then open and close the top cover. 2. If the message persists after all media is removed: Check if media is jammed in the prefeed area. Replace any defective sensors or flags 13.21 DOOR OPEN JAM The top cover was open while printing. 1. Clear the jam and close the top door. 2. If the message persists, check the top door switch for proper operation. 13.5 PAPER JAM CHECK REAR DOOR Paper-delay jam at fuser. 1. Check the transfer roller and small media belt to ensure they are operating and can feed print media. 2. Check the paper path for obstructions at the transfer roller, toner cartridge, paper feed assembly, and fuser. 3. Replace any defective sensors or flags. 4. Turn the media stack over and/ or rotate it by 180° in the input tray. If still persists - replace fuser, then DC controller. 13.6 PAPER JAM CHECK REAR DOOR Paper-stopped jam at fuser. 1. Check the paper path for obstructions at the fuser and output/delivery area. 3. Replace any defective sensors or flags. 13.99 PAPER JAM [LOCATION] A non-specific paper jam occurred. 1. Remove jammed media from the specified location. 2. Verify the paper tray is fully closed. 3. Inspect and/or replace the feed and separation rollers. 4. Ensure there is no obstruction in the path, such as a torn piece of paper. 5. Open and close the top cover to clear the message. 6. Check sensors and flags for proper operation

check to see if the printer has a rear cover you can open then you should be able to reach in and remove the jam.

If message in display panel reads [13.XX PAPER JAM [LOCATION]]Media is jammed at the specified location (and possibly at other locations). If the message persists after all jams have been cleared, a sensor or sensor lever might be stuck or broken.
Soln.
For all jam messages, do the following: 1. Remove jammed print media from the specified location. Check the entire paper path for other pieces of media in the path. 2. Open and close the top cover to clear the message. 3. Check sensors and flags in the paper path for proper operation.

For message 3.0 PAPER JAM [LOCATION]
means A non-specific paper jam occurred.
Soln
1. Remove jammed media from the specified location. 2. Verify the paper tray is fully closed. 3. Inspect and/or replace the feed and separation rollers. 4. Ensure there is no obstruction in the path, such as a torn piece of paper. 5. Open and close the top cover to clear the message. 6. Check sensors and flags for proper operation.

For more help check yhis site

http://www.printertechs.com/tech/error-codes/error-codes-0-19.php

Hi we2halls,

You may want to try the procedure on this link to help you clear the "Paper Jam". It includes detailed instructions and some illustrations.

Hope it helps.

Thank you for using FixYa.

Have you tried this? It explains the best way to get to the jammed paper - from the rear of the printer.
http://h10025.www1.hp.com/ewfrf/wc/document?docname=c00386753&cc=us&lc=en&dlc=en&product=443024

Make sure there is no paper stuck inside in the paper. may be there is small piece of paper stuck inside
Just unplug the power and open the cover and remove the toner or cartridges from the printer and manually try to roll the roller and remove the paper.
Hope this helps. Please rate my response.
Thanks.
Have a good day.

If you've unplugged the printer and restarted the PC, you may have to uninstall the driver and reinstall it.

plz refer to the link

http://h10025.www1.hp.com/ewfrf/wc/document?docname=c00386753&lc=en&dlc=en&cc=us&lang=en&rule=8662&product=443024

If the machine says paper jam then the machine will not function until the paper is removed. The machine has to be disassembled and the paper removed.