There are air intake slots under the keys on the keyboard. Keys f1- f4 , qwert, asdf. I used a vacuum on top of the keyboard to suck the dust back out. If you cannot control the vacuum suction, place the nozzle on the keyboard and turn on then off, move the nozzle over other keys and repeat the process. This prevented and keys from being sucked off. My fan speed went way down and no more turn offs