Your scanner may cease to work properly after the computer has recovered from a power supply failure or a crash. In such cases, the scanner may continuously repeat the scanning procedure without stopping.
1. Turn off the scanner and then start it again after some time.
2. Open task manager by pressing Ctrl+Alt+Del. Check if any scanner program is loaded and running. Turn off any such program by selecting it and clicking End Task.
3. If the scanner still behaves abnormally, turn it off and unplug the power cord from the power outlet.
4. Plug the power cord back to the outlet after some time.
5. Restart the computer. If the scanner is off, turn on the scanner as the computer is shutting down.
6. If the scanner does not properly after windows reloads, contact the scanner manufacturer.