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Hi,
Thank you for posting the question on Microsoft community forums. As per the description, you are unable to install the program for the Epson Stylus NX330 All in one printer and is not working with Windows 7. Let's perform few troubleshooting steps and try to resolve the issue.
- What happens when you tried to install the program?
- Do you get any error message?
- Have you downloaded the appropriate drivers for the device?
- Are you trying to connect the printer wired or wirelessly?
- Are you using 32 bit or 64 bit computer?
Refer:
How to determine whether a computer is running a 32-bit version or 64-bit version of the Windows operating system
http://support.microsoft.com/kb/827218
Perform the steps mentioned here.
Method 1:
Run the troubleshooter and try to update the printer drivers and check with the issue.
Fix printer problems
Method 2:
You may download and install the appropriate drivers from here.
Refer:
http://www.epson.com/cgi-bin/Store/support/supDetail.jsp?oid=183403&infoType=Downloads
If the issue still persists, I would suggest you to contact Epson support for further assistance:
http://www.epson.com/cgi-bin/Store/AboutContactUs.jsp?BV\_UseBVCookie=yes&Category=Help
Hope this information helps. Please reply with the status so that we could help you further.