Hi,
In addition to formatting the C: drive, you have most likely deleted/formatted the Dell utility partition (3GB).
How many (visible) partitions did you have on the drive?
Do you have access to another computer where you can mount the HDD run TestDisk from Windows?
If so - follow the steps here:
http://www.techsupportforum.com/1163140-post1.html
Don't make any changes - just post a few screenshots.
How to post a screenshot.
I don't think it's necessary, but if you need another HDD this is a good choice:
http://www.newegg.com/Product/Produc...82E16822148316