1. Turn off the Epson Stylus CX8400 Series.
2. Disconnect the USB cable from the Epson Stylus CX8400 Series.
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5. In the next window, select EPSON Stylus CX8400 Series and click OK. Then follow the on-screen instructions.
6. Open the Windows Control Panel, then click Uninstall a program under Programs (Windows Vista) or double-click Add or Remove Programs (other Windows versions).
7. Click EPSON Scan in the list of currently installed programs and click Uninstall/Change (Windows Vista) or Change/Remove (Windows XP or 2000).In some cases, a message may appear to prompt you to restart the computer. If so, make sure Yes, I want to restart my computer now is selected and click Finish.
10. Restart your computer, then see the Start Here sheet to reinstall your software.