How do you disable a laptop keyboard?

if you have XP laptop .. next this may well help

right sound on My computer -> Manage
click Device Head

expand the Keyboards

click on the keyboard and right click . Unisatall or Disable
in case of Unistall .. you have to scan for hardware changes found on the ACTION in the top bar
so it will work again
or a simple reboot .

By the route, modifying the laptop Power settings and closing the LCD .. will make the laptop overheat all the night .. it is not a good idea .