Printer's printing black instead of colored.

re-install the driver for 842c

Try HP Support

HP Color LaserJet 2840 All in One Printer Software and Drivers

The LaserJet 2600N has a built-in print server and can be connected to the local network (normal ethernet cable) directly. While printer sharing via Windows should work, I found it much more convenient to access it without the need of a hosting computer - you do not need to switch on the desktop PC for printing from the Laptop, for example, its also printing faster.

If you go here you can download or view a manual for your printer, with detailed instructions on changing the print cartridge settings in windows or mac.
If you go here, you'll be taken to the home support page for your printer, where you can enter a search for "print in color", and detailed instructions will follow.
You go to control panel>printers>print preferences> and uncheck the grayscale printing and set the color to auto.
Issue: Image prints black and white instead of color....See below.
Solution: Uncheck Grayscale Printing checkbox (Windows)

Unchecking Grayscale Printing Follow the steps below to change the Grayscale Printing option:

1. On the Windows desktop, click 'Start', point to 'Settings', then click 'Printers' (Windows XP: On the Start menu, click 'Printers and Faxes').
   
   For Windows Vista: Click / Select 'Start' from the bottom left of the Windows screen, 'Control Panel', 'Hardware and Sound', and then click on 'Printers'. Note: If you are in 'Classic' view, Click 'Printers' directly from the 'Control Panel'.
   
2. Windows 2000/XP/Vista: Right-click the printer icon, then click 'Printing Preferences'. Windows 98/Me: Right-click the printer icon, then click 'Properties'.
   
   
3. On the Main tab, click on the 'Grayscale Printing' check-box to remove the check-mark.
   
   
4. Click the 'OK' button to save the setting.
   

I hope this information allows you to resolve this issue. If you need further assistance, please post back with a comment to this thread.
If I've managed to answer your question or solve a problem, please take just a moment to rate this post....thanks!

Because your printer is not either wireless or network capable, the only way to get the results you need is to purchase a usb print server, hook it to your router, set it up through it's management console, and if your router is wireless, you can hook up to your router and print to your printer with your desktop turned on or off.

Okay if your using windows OS go to control panel , then printer and fax icon open it you will see Lexmark printer series listed right click on it and go to printing preference tab ,uncheck print all documents in black and white click okay and then try to print....

Good luck...

quiet easy you have to change you print selection to all or everyday printing that way it will print both color and black all together instead of not this and that

cyan cartridge is faulty replace with new

When you go to print, go to properties for the printer you would like to print. Once there find the tab that says color and make sure gray scale is checked off. It could depend though where that setting is at by printer. Please provide what printer you have. Just the brand no product number or anything only if what i gave at first does not help.

Well, Yeah mine did the same thing!!

And I got soooo fusy! and etc. But yeah okay go to the manul script and look for the ink Number then once you find the ink number go and buy the ink that has the same number of ink as yours!

Then,

Once you get home replace it with the others.

BUY THE BLACK INK! not the TRI-COLOR!