Cannot boot after scanning by Norton Power Eraser - Dell Visto Windows 7 64 bit

I tried to clean this desktop by Norton Power Earser, after that, it cannot boot. I tried restore but it does not work. I tried to Undo, but it does not have the Undo file in the fold so I can not do it. 

Please, if anyone could help,  I'm desparate.

I've heard Quads is pretty amazing at this kind of thing.

Thanks  to all of you in advance.