I'm no expert but don't think it's because of Windows 7 - I've had this printer for about 4 years and used it ok ALL FUNCTIONS on Vista. Now my new laptop's OS is Windows 7 64-bit and until recently it did scan ok on Windows 7. It is only in last 2 days the problem has arisen and it won't Copy or Scan but prints ok.
The last time I uninstalled the HP drivers etc and downloaded the current version from HP I successfully installed everything and then tried a scan and "lo and behold" it started working - BUT about three quarters through, the image which was slowly appearing on my screen, suddenly stopped and since then nothing works on scanner function. The HP manager keeps telling me to align the new cartridges but although I can print the alignment test page I can't scan it so I'm totally bemused and will probably just dump the printer when the ink cartridges run out and buy another model - maybe a different manufacturer.:smileyfrustrated: