Windows 7 update causes computer to not find scanner

after a recent Windows 7 update all of a sudden my notebook cannot find my scanner. it prints fine thru same machine, but will not recognize scan function - says WAI driver missing. I never deleted any drivers. I have fixed it with a system restore, but it coninually updates and sys rest is extreme remedy that causes other problems.
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  1. Is it a Canon scanner?

    Welcome to the Forum!

  2. No, it is an HP 5780 Officejet All-in-one printer/scanner/fax/copier
  3. There was another reply here that disappeared before I could copy it. Where did it go?
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