I had a notebook with Windows 7 64 bit then migrated to a new notebook with Wndows 8.1 64 bit. When I download iTunes all of my music is there but when I try to log onto the Itunes store I keep getting this message "iTunes has stopped working. Windows will close the program and notify if a solution is available." I have uninstalled iTunes and reloaded the Windows 8/2 64 bit version several times to no avail. I have tried everything I can think of to no avail. Help please. marylea