Don tried to sign in to Windows on his Lenovo Desktop and he can't access it. Leo says that he worries that Don isn't using the same Microsoft account to log in. Can he go to Best Buy to fix it? Leo says that Best Buy is fine, but Leo recommends finding a "shade tree mechanic" computer store locally, that will be happy to do the work in front of you. The best thing may just be to wipe your drive and start over with a fresh install of Windows.