Hear Jennifer, I have the same problem,
Model is inspiron 5423, 14z ultrabook with i5-3317u 1.7ghz, 8gb ram too.
Please help.
Restart and pressing F2, the SATA is NONE.
What do you mean by "Now kindly delete upper and lower filters from the registry settings then see if the issue is resolved. "??
I do not understand how to delete upper and lower filters from registry setting