Might be an idea if you gave a little more info - not everyone on here is psychic.
You could try going to Control Panel / Devices and Printers
Then right-click on your Epson and choose Set as Default Printer
On the other hand, if you are trying to print in Chrome, look at what it says for "Destination" in the column on the left. If it says "Save as PDF", click Change, and select your Epson.