Fan on most of the time after CPU upgrade

[Shinchan]

Does any one has similar problem? I upgrade my T40 237358U from 1.3G to the new 1.8G... but it seems like the fans is on most of the time when the power is plug in. I have also update teh BIOS yesterday to the neweest.

Anyone can help?

and YES.. the CPU upgrade did work.. I can see its running at 1.79 with power plug in.

[Kenn]

My 1.8 T42 has the fan on pretty much all of the time on AC. It's probably on because the CPU generates a lot more heat than the 1.3.

I just updated the BIOS and ECP to most recent as well, will report back on whether that made a difference.

[dvorak]

Other users have appearantly reported issues with the latest BIOS and constant fan, otherwise use some temperature reporting software, the fan starts to run if the temp. is above ~45 degrees on mine.