Sorry, but this isn't a good sign. Drive 0 is most likely your main hard drive, and only if you have a second one would you computer ever find anything on Drive 1.
I would check the connections inside from the motherboard to the hard drive, as well as from the power supply to the hard drive.
Here's the manual:
Also, if you boot your computer to the Dell copy of Windows, go through the motions of reinstalling Windows and you probably won't be able to detect any drive to install it on.
You'll most likely need to replace the hard drive altogether. Sorry!
Hope this was helpful for you (even though it was bad news)!
If so, please give a rating!