software, unplug the the printer if connected by USB. Reinstall the drivers but download the newer Epson Driver dated 25 March 09 from here click here
It could be a bad install or comunication with the printer. You didn't say which windows you have ?
Cartridges even though they can be new can dry up a little or total if left redundant not printing in a printer. Lexmark are the worst for this, especially the older Lexmarks anyway.
You could call Epson for free telephone support and they would diagnose it over the phone to tell you if it is a fault with your printer.