A computer problem.

[Raz]

Here is a number sequence that I found on the bottom.
80045-408-442-619
The only options under HDD Diagnostics are selcting the Main Hard drive disk or the Ultrabay hard drive disk, both come up with a screen saying that they are not found when I select them.

You could do two things to help us out here;

You could go on to the lenovo website and pick out your exact laptop and post us a link to the product page so that we can grab the manual/technical docs to fix it

OR

take a photograph of the bottom and the front of the laptop (with the lid open) and post it to myself or vipershark, we'll get the model number and post it for the rest of the community to help.