Scanner won't work?

Have a Canon Pixma MP450, the scanner won't work, the printer and copier work fine. I hold downloaded the full disc. It has worked contained by the past, singular used it twice probably. Get an error message telling me cannot communicate near scanner.Scanner may be turned off or cable disconnected which they are not. Any assistance?

Scanner won't work?

Try shutting down your computer and while it is off turn your scanner power switch on and boot your Computer. If that does'nt work dance to the manufactuer's website and download the driver updates for your scanner. "PEACE"
thry reconecting the wires and try doing a scan right now if you can!