Computer Making Whirring Sound

[KayfabeMan]

Yesterday when I was online my computer started making a whirring sound. Then when I re-started it this morning, as soon as it turned on it made a loud whirring sound, and is still doing so right now.

Anyone know what the possible problem(s) is/are??

Thanks in advance.

[KleptoKlown]

http://www.tpww.net/forums/showthread.php?t=21498