So, my grandma screwed up her laptop. It won't boot properly, and the error is apparently as the title says. I already tried booting in safe mode, some tech guy on Youtube got me fiddling with the registry, and nothing I've tried has worked. And, of course, she never made any system restore points, because why would she!? That would be too easy! I tried to reinstall and keep her files, but that wouldn't even start up. It just says there's a problem resetting the PC. She royally screwed the thing up. I don't even know what she did. As far as I know, all she ever used it for was doing her taxes and printing off sewing patterns, so I don't know what she did. Please help!!