When _not_ running the cooling fan at full speed it sounds as if it is hitting something internally as it spins. It goes away once the fan gets up to speed if you are playing a game that requires a lot of processing power. When it makes this noise, if you flex the right-hand side of the laptop, or rest your hand on it as if you were typing, it gets louder, and sometimes goes away until you stop flexing it, or if you stop resting your palm on it.

It sounds as if there is just not enough clearance for what is in there.

Any ideas?

Thanks.