Hi, I just bought a Latitude E5430 expecting to get some Dell Business notebook Quality. I am using Windows 8 x64 (in UEFI-mode) with BIOS A09 and the latest Drivers available from dell.com.

The issue that I am encountering is that as soon as the fan turns on, it does not turn off for a long time (blowing out cool air), even though there is no high system load (just Internet Explorer opened) and the temperature is below 50C.

 
Basically, the fan starts at some temperature threshold, cools down the CPU to 38-40C, and even though the running fan does not cause the CPU to cool down more, it keeps running for a long time (10 minutes and counting) (while the CPU temperature constantly stays at 38-40C). :-(

Please forward this issue to the BIOS development department so that they can provide an update which improves fan control.

Everyone also having this issue, please have a look at this post from Dell-Terry B:

http:/en.community.dell.com/support-forums/laptop/f/3518/t/19480918.aspx?PageIndex=3#20294684

where he is requesting more information from users affected.