Thread: Computer Fan (Laptop)

In both hibernate and sleep mode all the processes stop. If your computer is doing work (encoding a movie, doing a long download...) you can't do that.

Hybernation is, at least on my laptop, where it safes all settings and programs on the harddisk, then shutdown, and when you boot it, it will return to what you were doing, when you set it to hybernate.

Sleep, is just turning off all processes, without shutting down.
Difference? Sleep starts up faster, but also drains power, while hybernation virtually doesn't.
My laptop fan can make a bit of noise, when lots of processes are running, but all in all, I'm never annoyed by it, or anything.

You should try getting some compressed air and cleaning your fan out. Usually fans are made to not make that much noise.