It could be a corrupted file. Try to uninstall the existing printer driver from your computer. Go to Start menu > Programs > Lexmark Z23/Z33 folder > Tools > Uninstall. After the uninstall process, reboot your pc when prompted.
When your pc turns on, please visit the Lexmark website to download and install the Lexmark Z23/Z33 Printer Driver
on your computer. Simply follow the instructions on your computer screen to complete the installation.