There is written ink system failure Oxc19a0003 and that i should turn it off so i do but the same thing hapens again What do i do?

Your Printhead has failed ,but before declaring it dead pls confirm whether paper was struck before receiving this error very badly and also whether you have been using it for a long time then the printhead needs to be replaced

What printer is it? What factory and what model?

See hp support document at the link below.

http://h10025.www1.hp.com/ewfrf/wc/document?

Solution One: Reset the printer The error message might disappear after you turn off the printer and then turn it on again. After you make any adjustments to the cartridges or the printhead, reset the printer in order for the error message to clear completely. Follow these steps to reset the printer.

1. Press the Power button ( ) to turn on the product.
2. With the product turned on , disconnect the power cord from the rear of the product.
3. Unplug the power cord from the wall outlet.
4. Wait at least 15 seconds.
5. Plug the power cord back into the wall outlet.
6. Reconnect the power cord to the rear of the product.
7. If the product does not turn on by itself, press the Power button ( ) to turn it on.

Hi There, Please follow the below link to get your issue resolved :
http://h10025.www1.hp.com/ewfrf/wc/document?docname=c01458034&lc=en&dlc=en&cc=us&product=443024#N65
Please click on the thumbs up icon if you think this solution helped you.
Thank you. Jyoti :)

hp photosmart c7288 all-in-one



ink system has failed unable to copy receive faxes or print refer to printer documentation error oxc19a0002

IssueAn 0xc18xxxxx or 0xc19xxxxx ink system error code displays on the front panel. The printer cannot copy, receive faxes, or print. Solution
Press the On button to turn the printer off. 
Unplug the power cord from the back of the printer.
Remove all the ink cartridges.
Wait two minutes.
Plug the power cord into the back of the printer.
Press the On button to turn the printer on. 
Install the ink cartridges when prompted.
If the error code does not display, the issue is resolved.
If the 0xc18xxxxx or 0xc19xxxxx ink system error code displays on the front panel, service the printer.

Turning the printer on and off will not solve your problem. If you get ink system failure you most likely have air in your ink system. This will happen after months of use -every ink cartridge you reload and purge will have a little bit of air trapped in it and over time it must add up. You have to do a system reset which causes your printer to start over and do a full purge of ink through your system. This is what happens when you do your first ink system set up when you open install new ink cartridges. To do a ink system reset you must first:

1. After your printer gives you a ink system failure you will need to press and hold down ok and cancel at the same time and then press the start button once. (make sure you hold the cancel and ok down until the system shuts down and then release).

2.Now (Again) hold the cancel and ok Button down and and press the on button again -making sure to keep holding down the cancel and ok until it shuts itself down again. It will seem like it is starting up again up will then just shut off. Now once it has shut off for the second time (It is VERY important that you have a new set of ink cartridges installed before turning on the system for the second time) This is because it will do a full ink purge and rid the trapped air in the system. If you have old ink in it or almost empty it will most likely not purge enough. A new set of ink works best- You can go back to your old ink after if you like and keep the "new" set for back up when the system fails again down the road (it will fail again -this is poor designing by HP).

3.Now once you have shut down the system and loaded a fresh set of ink (all 6 of the ink cartriges) you can now press the on button (at this time you should get a reset code the come on first and the printer will run its purging of the air and new ink.

4. You might have to do this more then once to rid all the air out of the system-keep trying and after 2 -3 times it will stop giving you the ink failure. I have fixed my printer many times by this fix for many years.

Good Luck!