How to type symbols on a keyboard<br>Click on the " start " button that you use to shut down your computer. Select the " programs " option. Go to " accessories " then select " system tools/character map.
A laptop can overheat if not turned off periodically 
( z1 possible :ARG1 ( z2 overheat :ARG0 ( z3 laptop ) ) :condition ( z4 turn-on :polarity - :ARG1 z3 :frequency ( z5 periodic ) ) )