Just use the Windows add/remove panel to uninstall,it is a common case,if it doesn't work,I suggest you to choose the  Perfect  Uninstaller.It is extremely easy, all detailed information is listed on the user interface, just one mouse click on the "Uninstall" button. www.perfectuninstaller.com

If you want to uninstall Epson Stylus Dx4000 completely, I suggest you to choose virus removal Perfect Uninstaller (Windows add/remove panel can't do that job), it runs fast, and occupy few space.You can refer more information from the following websites: www.perfectuninstaller.com