Options are: 1) factory image is still ok, you can attempt to clone it to your new disk. Some ppl recommended easyus utility (http://www.todo-backup.com/products/home/free-backup-software.htm)
but never used it. Also not 100% sure if that one is fit for the recovery partition...
2) factory image not ok (maybe entire disk gone south) - nothing that you can do with it... so probably a shorter route is to contact dell