Is there a way to retrieve old files from SkyDrive?

I lost all files from my old pc, I thought files were kept in the email from where they were sent from, but now I find that they appear as "This item might not exist or is no longer available. This item might have been deleted, expired, or you might not have permission to view it. Contact the owner of this item for more information." I am the owner of the files. I hope those could be retrieved. Awaiting for your reply. Blessings. Axl Mihai