I had 3 computers and my windows smartphone syncing perfectly. One of the computers died. I installed SkyDrive on the new computer and can upload and download files, but it does not sync with SkyDrive. I deleted the defunct computer from the SkyDrive website, but cannot get the new one to show there. My 2 original computers and phone still sync just fine.  My Outlook contacts and calendar did download automatically to the new computer, but if I make changes on that computer, they do not change anything on SkyDrive.