Epson EPL-N2550 Series User Manual page 259

If About is displayed in the shortcut menu that appears, click
it. If a message box with the words "Unidrv Printer Driver"
appears, you must reinstall the printer software as described
in the Setup Guide. If About is not displayed, the printer
software has been installed correctly.
Note:
For Windows 2000, if the Digital Signature Not Found dialog box
appears during the installation process, click Yes. If you click No, you
will have to install the printer software again.
For Windows XP or Server 2003, if the Software Installation dialog box
appears during the installation process, click Continue Anyway. If
you click STOP Installation, you will have to install the printer software
again.
Checking printer software in Windows Me or 98
If you canceled the plug-and-play driver installation in Windows
Me or 98 before the procedure was complete, the USB printer
device driver or the printer software may be incorrectly installed.
Follow the directions below to ensure that the driver and printer
software are installed correctly.
Note:
The screen shots shown in this section are taken from Windows 98.
Windows Me screens may differ slightly.
Troubleshooting
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