Now I have a computer issue...

[Jason1]

We got our new Computer back in May, and havent had a bit of problems up until now. Whats hapening is, Sometimes, not all the time, when we turn on the computer (we usually turn it off for the night), a fan or possibly fans (I have 3 case fans, or I suppouse it could be the fan on my Radeon 9500 pro) Anyways, some fan(s) make a whole lot of noise during the boot up sequence, and for a few minutes after, then they finally quiet down a few minutes after the boot up is over. But it shouldnt be doing this. Any thoughts/Ideas would be greatly appreciated.