Windows 7 will not install Lexmark x7350 printer properly.

I would suggest you to uninstall and reinstall the latest drivers compatible for Windows 7.

You can also run Printer  troubleshooter.

Open the Printer troubleshooter

Open the Printer troubleshooter by clicking the Start button, and then clicking Control Panel. In the search box, type troubleshooter, and then click Troubleshooting. Under Hardware and Sound, click Use a printer.

For further information, visit the below mentioned link:

http://windows.microsoft.com/en-US/windows7/Open-the-Printer-troubleshooter

Printer Issues: http://blogs.technet.com/b/markrussinovich/archive/2010/04/12/3324570.aspx
 

You may refer the below mentioned links.

http://windows.microsoft.com/en-us/windows7/Install-a-printer

http://windows.microsoft.com/en-US/windows7/Find-and-install-printer-drivers

http://windows.microsoft.com/en-US/windows7/Change-your-default-printer

http://windows.microsoft.com/en-US/windows7/Printing-to-the-correct-printer

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Teching It Easy: With Windows |ActiveWin |Notebooks | Microsoft MVP