Epson PERFECTION 1240U Reference Manual page 137

Installation Problems on Windows
If you cancelled the plug-and play driver installation before the
procedure was completed, or if you do not follow the installation
instructions for EPSON TWAIN for Windows 2000, EPSON
TWAIN will not be properly installed on your computer. To
correct this problem, first uninstall your scanner in the Device
Manager menu following the instructions below, and then
reinstall EPSON TWAIN following the instructions in your
Startup Guide.
Follow the steps below to check the installation.
1. Plug the interface cable into your scanner and the computer.
Plug in your scanner and then turn on the computer.
2. Right-click the My Computer icon on your desktop, and then
click Properties.
For Windows 98 users:
Click the Device Manager tab.
For Windows 2000 users:
In the System Properties dialog box, select the Hardware tab
and then click Device Manager.
3. If your EPSON TWAIN is correctly installed, EPSON
Perfection 1240 should appear under Imaging Device when
you click the plus (+) sign next to Imaging Device.
If EPSON Perfection 1240 appears under Other devices with
a question (?) mark or under Imaging Device with an
exclamation (!) mark, the EPSON TWAIN file is not installed
correctly. Follow the instructions below to reinstall the driver.
Maintenance and Troubleshooting
6-21