Epson Perfection V500 - Manual (Page 227)

(located under Programs), or click > Control Panel and then
double-click the Programs and Features icon.
Windows XP: Click Start > Control Panel > Add or Remove
Programs, or click Start > Control Panel and then double-click the
Add or Remove Programs icon.
Windows 2000: Click Start > Settings > Control Panel. Then double-
click the Add/Remove Programs icon.
Select EPSON Scan from the list.
Click Uninstall/Change, then click Continue in the User Account Control
window (Windows Vista), or click Change/Remove (Windows XP and 2000).
When the confirmation window appears, click Next or OK.
In some cases, a message may appear to prompt you to restart the computer.
If so, make sure I want to restart my computer now is selected and click
Finish.
Uninstalling Epson Scan for Mac OS X
Turn off the scanner using its power switch.
Disconnect the scanner’s USB cable from your computer.
Quit all running applications.
Insert the scanner software CD-ROM into your Macintosh.
Open the Epson CD-ROM desktop icon, if necessary.
Double-click the Common folder, then double-click the EPSON Scan folder.
Note:
You may have to scroll down to see these folders.
Double-click the EPSON Scan Installer icon.
Note: