Moving to Windows 7--From Vista
If you recall, last week we performed the leap from Windows XP to Windows 7. In a nutshell: An in-place upgrade didn't fare well. Of course, in-place upgrades aren't supported from Windows XP to Windows 7. Given the heavily-used XP installation caused serious bloat to the Windows 7 installation, we can see why.
When we performed a clean installation and, with a bit of trepidation, used Windows Easy Transfer to move our files and settings from old machine to new, it worked better than we expected, but our final recommendation was simply to save your data, reformat, and start with a fresh, clean installation of Windows 7.