Before we using a new device, we'd better study the instructions firstly. sometimes, we may in trouble. Last week, a friend of me said there was something wrong with her newAcer Laptop Keyboard. There may be a function on the keyboard to disable it. Look on keyboard and see if there is any function keys that has a keyboard on it. You may need to press the FN key and the other key with keyboard to enable and disable the feature.Another friend also has the similar problems, he said "I think the circuit under "G" key is not functioning due to short circuit. In that case, I recommend to bring this to technician for repair or buy a new keyboard since this is cheaper. Besides, it's the problem of the internal circuit board the particular point on the circuit board which supports the key is stopped functioning. you will have to remove the key board then beneath that key which is not working you will see a circuit board track ,that track has got short on the board you just need to resolde5r it.if not familiar with doing this is advisable to get it done by local laptop repair center.it will not be very costly and also yes its a common problem and easily gets solved after re-soldering. And other kinds of keyboards may also can apply this way,such as Apple Laptop Keyboard, Asus laptop keyboard andCompaq Laptop Keyboard and so on--- This will help. Thanks please keep updated.please do rate the solution positively .thank you for using fixya.