There should be no noise from a new one, and the present noise is due to wear/condition. What is an acceptable level to one may not be to you.
If you feel confident you could open it up and de-dust it but it sounds a lot like the HDD. Cheap enough to replace if it really irks you, but do you have a backup of the Operating system? The 10" netbooks don't have a CD player so how would you re-install the OS.



