LCD panel on HP Photosmart All-in-One C7180 is Blank

take a lint free cloth and then clean the copper contacts of the ink cartridge.. if it does not work then try with a different black ink and then contact HP for replacement of the black ink if the ink cartridge is in warranty

replace the print head unit not the cartridge.

Hello
completely Uninstall the drivers and reinstall drivers


Go to control panel Add/Rem and remove HP Software
Go To Control Panel
Click on System - Hardware - Device manager - Printers - Right click Uninstall (HP Printer Drivers)

Reinstall the drivers from the following link

HP PS C7180

http://h10025.www1.hp.com/ewfrf/wc/softwareCategory?product=1153754&lc=en&cc=us&dlc=en&lang=en&cc=us

Go to www.hp.com On the right hand top corner there is a search bar type this number 'c01892704' and you'll get the document follow that

No there isn't

Try resetting the printer:

1- Turn off power and unplug from power source.
2- Open right side of printer (looking at the front).
3- Disconnect,by pulling gently, both white flat ribbon cables off the main circuit board.
4- Plug in power source and turn printer on. Wait till you get a error message and push "Ok".
5- Unplug power source.
6- Reconnect the flat ribbon cables by aligning and carefully pushing into the conectors on the main circuit board.
7- Plug in power source and turn printer on.

Printing HP Photosmart C7180 All-in-One Printer


GO TO THE FOLLOWING LINK:


http://h10025.www1.hp.com/ewfrf/wc/documentSubCategory?rule=21160&lc=en&dlc=en&cc=us&product=1153754&lang=en


Have a good day,

from the Printer Dialog box, choose properties and change the Default setting that is either Automatic or Colour to Black. Good luck

In this case what i would request u to do is.......
Take out both the catridges from the Printer.........
Take 2 Paper Towels one should be wet with Luke warm water and the other one should be dry...........
Take the Colour catridge first turn it upside down and u will see a small copper plate on the catridge from where the ink comes out.......
Place the wet paper towel using ur thumb on the Copper plate and press it a lit bit for 10 Seconds......
Now remove it and see whether u see any ink on the paper towel..........
U should see some ink on it now place the dry paper towel on the ink catridge in the same way........
Now do the same procedure again..........
Do the same procedure twice on the Black Catridge.................
Now take the dry paper towel and turn the direction of the cartridge so that u can see a Copper plate on it with small boxes just clean that copper plate with the Dry Paper Towel..........
Know insert both the catridges inside the Printer.........
Pls try doing this...........
Good Luck...................

trade the unit in with hp directly