Hi, I have a Inspiron 3521 laptop and I am doing a factory restore as mentioned in this article.  http://www.dell.com/support/troubleshooting/us/en/04/KCS/kcsarticles/articleview?docid=608277

But in the Step 9, 'select the backup you want to use in the list below', I get empty list. Does that mean my laptop doesn't have a factory image?