I wouldn't say there's anything to prevent a reasonably practically minded person taking a laptop down to its chassis and back up. It's just components, screwed, clipped, wired and slotted together afterall. No big deal.
I'd never so much as removed a single screw from a laptop when the systemboard in a Thinkpad I had died. Obtained the part, got the small screwdrivers out and away I went. About an hour later it was all back up and together and working perfectly. The only thing you can really put back in the wrong places are screws due to their varying lengths... and you wouldn't want to put a long screw in a short hole which may have something sensitive behind it.
In fact, I'd say that the one part of a laptop you are most likely to break when pulling it apart is the screen bezel. They're nearly always flimsy enough to break if you look at them too hard and never seem to want to unclip easily.
Go for it. Nothing ventured... and all that.