Just curious - on the underside of this laptop it says X83V, but in the system notes it says N80V. I purchased it a couple of years ago at Best Buy, after a fair amount of research. Secondly, I'm searching high and low for diagrams or pics on disassembly just for cleaning purposes. I found one discussion thread here about removing the keyboard, which was helpful - thanks. Does anyone know of others? I'm a former software tech, and have done "under the cover" work on my desktop multiple times, but never on one of my laptops. I'm sure I'll need to move carefully and slowly, yet surely. Thanks in advance.