This will help if you installed an incorrect or mismatched driver. Try to set a system restore point before installing a device driver.
LEXMARK X4270 DRIVER CNET INSTALL
Instead of installing and managing individual drivers for each printer model, administrators can install the Lexmark Universal Print Driver for use with a variety of both mono and color laser printers and multi-function devices. It is highly recommended to always use the most recent driver version available. The Lexmark Universal Print Driver provide users and administrators with a standardized, one-driver solution for their printing needs. Automatic Document Feeder Holds up to 30 pages Specifications: Lexmark Fax Software Enables easy sending of electronic documents Fax Features 79 speed dials and 20 group dial capability, 5 quick dial buttons on top panel, Caller ID and distinctive ring detection (where available), Confirmation, error and activity reports, Broadcast transmission and delayed transmission, Junk fax block (where available). However, there will be a fee to cover materials and handling if requested from the Technical Support Center.
The printer driver can be downloaded from this web site free of charge. Contact Lexmark for support information on this file at Technical Support Center. This download only includes the printer and scanner software. Lexmark 4200 Series All-In-One Driver for Microsoft Windows 2000, XP and Server 2003. Important - Do not reconnect the USB cable until the install software prompts the question of how the printer is connected.