whats that whirring noise in my laptop?

[piggynose]

My laptop is barely 2 years old, and its now making a whirring noise, which is barable(unsure spelling) in a wi-fi bar, but a lot noisier at home when watching as film.
should i expect a costly repair?

[joko]

it shouldnt...but clearly it does...

[piggynose]

i turned the laptop around, removed every conceivable plate, until i found what looked like a fan, and i blew air into it, put the plates back, but still have a whirring noise. i only work in air conditioned places, and always on a hard surface. hence the mate looking at it on thursday

[joko]

could it have sucked something into it perhaps? does it sound like something could be rubbing on the blades?

[piggynose]

strange enough, the noise it almost non existent in the wi-fi bar i go to, but quite noisy at home when watching a film.

[ChuckFickens]

Watching video is quite an intensive thing for a laptop to do, as it's working harder the fan will run more than if you are just browsing the web.

[wolf63]

Do you have a cat? My long haired cat seems to keep her spare coat inside my old pc.