There are new set of files for fan control here: [url="http://www.aspireoneuser.com/forum/viewtopic.php?f=51&t=4649&p=36698&hilit=acerfand#p36698"]viewtopic.php?f=51&t=4649&p=36698&hilit=acerfand#p36698[/url] that incorporates the BIOS updates. Have you tried these new files?