Have you uninstalled the scanner driver software and reinstalled? If you have, try uninstalling it again. Do a search for TWAIN and delete anything you find. Then reinstall the software. Often the TWAIN driver becomes corrupted and the uninstall will not remove it.
Try Don’s linked patch first if it applies to you.
If you can keep your head while others around you are losing theirs, then there is something you don't know