Do a web search for "undelete" and pick up a free trial version of software that you can run against the recovery partition to tell you whether it can locate the files which should still be there even if they're deleted.
If you can borrow a W7 DVD from a friend, you should be able to install a copy, quoting your own key, not the one on the DVD.
If you can borrow a W7 DVD from a friend, you should be able to install a copy, quoting your own key, not the one on the DVD.