Try to set a system restore point before installing a device driver Canon, Supported product(s) PIXMA MP150 PIXMAMP170PIXMA MP450 PIXMA MP500 PIXMA MP800 It is highly recommended to always use the most recent driver version available PIXMA, 4 MB MP Navigator enables you to scan in documents, photos or access images on the memory card or PC MP170, You can the edit, save or print the images Navigator, Do not forget to check with our site as often as possible in order to stay updated on the latest drivers, software and games Canon, OSSupport:Windows Vista Size:9 PIXMA, This will help if you installed a wrong driver MP170, Problems can arise when your hardware device is too old or not supported any longer Navigator,