I mean it only does this winning or another word for it is like a grrr sound I am abit concerned about it although the fans seems to be spinning ok ? it starts the noise when switching the computer on and it then stops when seeing the windows logo and the green bar that scrolls across before going into the main windows screen sorry for the repeating here
What happens when you do a restart (Start-> Turn Off Computer-> Restart). If restarting from warm doesn't produce the effect it indicates that it is due to something mechanical (a fan or it could be the hard drive) getting up to speed or getting its lubrication in order.
To check whether it's the hard drive, boot up from cold with the hard drive disconnected.
Yeah, i think your just getting worried over nowthing, the computer uses lots more power and heat on the CPU when powering up, and the fan has to compete with it to keep the CPU cool, but its working to had its making a noise, you mkight want to install another fan for just over £10 to make it cooler.
There is currently only one fan in my mums machine the noise I am not sure but it dosnt sound normal it only makes the noise when the machine is first turned on but it dosnt always happen and then stops.