Lexmark X75 all-in-one will not print in color - black is fine.

Make sure that you are inserting only genuine Lexmark cartridges in your printer. Removing then re-inserting the color cartridge into the printer is a quick to minor cartridge communication issues.
Make sure that your color cartridge still has substantial ink level for printing using the Lexmark Solution Center software on your computer.
Click Start > Programs > Lexmark X74-X75 > Lexmark X74-X75 Solution Center. Check the ink levels.
If color ink level is still good, then it probably just needs some cleaning. Print quality issues can be due to dirty or clogged print cartridge nozzles. From the Maintenance tab in the Lexmark X74-X75 Solution Center, click Clean print nozzles to fix horizontal streaks. Your printer will then print a test page. Try to print a color page again to verify that the problem with the blue color is fixed.
If the problem continues, try to insert a different known working color cartridge to identify if it's a faulty cartridge issue.

run the print head cleaner tool using the lexmark software. since you hardly used the color the print head nozzle is dried up and needs to be clean.
run the print head cleaner atleast 5-10 or more times as needed.

Try to reseat your cartridges. Unplug and replug your printer into the power source to reset itself. If that doesn't help, try to clean your cartridges and check if print quality improves. If you're using Windows, go to Start -> Programs -> Lexmark X74-X75 -> Lexmark X74-X75 Solution Center -> Maintenance -> Clean print nozzles to fix horizontal streaks.

When you print a color document do you get any color output ?. You may want to try to print a test color document, consisting of say Red, Green and Blue color blocks. If any of the blocks is missing you may want to replace your color cartridge.

free needed software for lexmark x75

Go into the control panel. Select printers. Move the mouse over to the printer icon. Press the right mouse button. Select properties. Select printing preferences. This is where it changes my mfg but make sure that print in grey scale isn't checked off or any other settings in the finish section that would disable you from printing in color.

If that doesn't work, it could be the contact points going to the cartridge on your printer. It could be the ribbon cable. If these are the case you should take it into a shop to specifically pinpoint what the problem is.

Please check color cartridge is ok or not
if it is ok then check your printer configuration in Your pc it should be a gray scale printing ....

Is printing black >>yes printer is fine..
Open the printer properties. You will find the Print Color images in Black and White option uncheck it and apply ok..
if this does not solve the problem please the below pro""""
If the colour cart is kept for long time unused it may dry and result no print.
Try cleaning the cart nozzels(at bottom of thr cart i.e ink comes out ) use this link to follow the clean and wick:http://support.lexmark.com/cgi-perl/knowledgebase.cgi?ccs=229:1:0:549:0:0&framed=&docid=ENUS0&relevance=0

if the black was empty you would notice the difference in the pictures as well, but if the word print is black, it wont print in colour it's supposed to print what you see.

even though you have ink coming out of the cartridge, if it's more than a few months since it's pumped any ink, it can be clogged internally, blotting with paper doesnt always work. Try a new cartridge, or buy a new printer, it's usually cheaper now to get a whole new printer than it is to replace a set of cartridges. consider it's a few years old now