I have just updated to W7 and am struggling to use the above printer. My inks are fine, the connections are fine, but every time I try and print the test page it emerges black and white. I've tried entering both cd's for initial registration without success. The amount of websites offering help is a bit confusing for an amateur like me. Would appreciate a guiding hand.
I have today just got a windows 7 computer. It is the 64bit version. I also have the same printer so I just loaded my discs in from the XP setup and they worked fine. You can go to the Canon site and download others if you wish. If I were you I would just unistal what you done and try again after restarting the computer. If that fails go to the canon site and download.
I now have a Canon MP640 and W7 64 bit. Had to download W7 64 bit drivers from Canon(amazing not included on CD for a new model)and found via Adobe that for Photoshop CS4 at least, the Twain scanning interface does not work in 64bit (only WIA), so I scan in CS4 32bit then work on images in CS4 646bit.