My Toshiba M40 gives me similar keyboard problems. I get funny characters like
NB¬A
when I press the left Shift key and then the keyboard starts behaving abnormally:
1. it shifts to caps mode, to type lower letters, I have to actually use caps lock.
2. I cant use the shift key to type in the special characters above the numerals.
3. clicking on the menu bar gives me a different effect as if the shift key is already pressed while it is not.
4. I cant select one file or folder as several of them selected at one time.
and then I give up, shut down the computer (it doesnt restart at this time)
after some time, the computer starts normally but I am never sure when it will start misbehaving again.
I read on this board about he bios update, so got mine updated to the 1.7 version from toshiba website (this is the latest one they had for machines with ATI graphics). Dont tell me to take it to Toshiba because I did take it to their authorised service centre in Mumbai and they were of no use.
thanks