Hardware devices used with a Windows computer require a set of files called drivers to operate correctly. Drivers allow a device to communicate with the other portions of a PC. A specific type of driver called TWAIN is required for imaging devices such as cameras, printers and scanners. TWAIN is not an acronym; it comes from the line "and never the twain shall meet" in "The Ballad of East and West" by Rudyard Kipling, and refers to the early difficulties that computer programmers had in getting imaging devices and imaging software to communicate. The device manager in Windows allows you to remove TWAIN drivers.
Step 1
Click the "Start" button on the Windows 7 desktop and type "Device Manager" (without the quotation marks) into the Search box. Press the "Enter" key to launch the device manager. The device manager window shows a list of devices installed on the machine.
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Step 2
Double-click on "TWAIN" drivers to open a new window.
Step 3
Click the "Driver" tab, then press the "Uninstall" button to remove the TWAIN driver. Close the device manager to return to normal computer use.