The computer is now communicating with the printer. I have a Lexmark X74-X75. I've tried several things printed on page 24 and 25 of your manuel but nothing seems to work. Do you have any suggestions?

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.

Please visit the Lexmark website to download and install the Lexmark X74 - X75 printer driver on your computer. Select your operating system > click on FILTER> download and execute the file. Simply follow the instructions on your computer screen.
I hope this information has been helpful.
Should you still need assistance, please leave a comment to my response and I'll get back to you.

I regret to inform you that the Lexmark X74-X75 All-In-One printer is not compatible on Windows 7 operating system. Please contact Lexmark Technical Support Center for other options.

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.

Support information the X75 printer can be found here.

Support information the X74 printer can be found here.

On these page are a link to Windows 7 Information; if you open you will find that Lexmark does not support your printer for Windows 7.

There are no Windows drivers available for the X75; however drivers for Windows, 2000, 98, Me and XP (32-bit) are available for the X74 and these will probably work for the X75.

If your operating system is one of the above check under the tab labelled Downloads; select your operating system to download your driver and save in a known location.

When you connect your printer Windows will try to install but you should be prepared to point to the driver location. If the printer doen not autoinstall you will have to add your printer manually through the Printer section of your Control Panel.

Go to start->all programs->Lexmark X74-X75->Lexmark X74-X75 Solution centre. 
Then click on the maintenance tab in the far left corner. then, under Select a Maintenance Tool:,
select "align to fix blurry edges. that should fix it.

try to remove ur driver and then install this one http://www.nodevice.com/driver/X74-X75/get33244.html

I dont think there is a driver for windows vista for lexmark x74/x75.
Try the windows xp driver from lexmark.com. See if that works.

Have you removed the protective tape that covers the printhead jets?

hello dude