Try the scanner on another machine, if it responds on another machine then that means you have an operating system problem on the original machine. If the scanner doesn't respond on the other computer as well then that means the scanner is bad and would need to be replaced.
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Try the scanner on another machine, if it responds on another machine then that means you have an operating system problem on the original machine. If the scanner doesn't respond on the other computer as well then that means the scanner is bad and would need to be replaced.