Pc wont stop revving

[Catch_24]

Hello,
I have a lenovo pc with the ubuntu 12.04 upgrade and my computer just keeps revving every few seconds. I'm not real technically inclined i need a simple solution. Can anyone help.

 

[dragonlord12832]

Hope this helps.
http://tuxtweaks.com/2008/08/how-to-control-fan-speeds-in-ubuntu/