I have a Toshiba Portege M800/M800D (that's what it says on the instruction manual anyway), and yesterday the little touch buttons/ light things at the top (the ones that mute, open media player/DVD, and play, stop, next, etc) stopped working. i didn't do anything to it to make it do this (at the time i think i was checking my emails). and i don't know whats wrong! i tried restarting it a couple of times, but nothing worked.
also sometimes, the fingerprint scanner randomly doesn't work. and there used to be a function on the mouse pad thingy where it scrolled down, but that stopped working maybe a month and a half ago
the laptop is fairly new (i got it for christmas), and has never been dropped or anything. In fact, i don't think it has left my desk at all!
i can live without these little touch light thingys (even though they were really useful) and the fingerprint scanner and stuff, but its really irritating! i would appreciate any help anyone can give me, because the other alternative is to take it back i guess, but i really don't want to have to move all my files to another computer and everything.

My friend had a simmilar problem in which the volume controls stopped working, this was because he accidentally deleted the program which controlled them, making them useless.

Are you sure that you havent accidentally messed around with any files or programs?

The only alternative would be to take it back, and since it's new you should have a warranty of some sort.

Or it could be caused by the LED buttons braking in some way.

Good luck