Nook HD Only Blue Screen

Hello,

I have a functioning Nook HD 16gb and my daughter has a non-functioning Nook HD 8gb.

Her Nook HD only boots up to a blue screen.

I have connected it to my computer and am able to browse the file structure. There are several folders with nothing in them???

Does anyone have any suggestions of a fix for my daughter's Nook HD?

Thanks in advance for your time.

Melissa