M50sv (notebook) and problem with bios mod: fan speed always

[Tony2k]

The original Nvidia 9500m GS partially fried last week so I bought a 9650m and I have modded the bios swapping the module from M50v bios.
The laptop boot and the gpu it's recognised from win 7 but I have only a problem, the fan now work always at the max speed. If I install the 9500m the fan work normally with this modded bios. What can I do?
If somebody want take a look here there are the bioses: Bios

[edwin]

Some info here on the 9650 and a M50 series laptop, maybe of interest to you as well:
http://mindhand.blogspot.com/2009/11/ge ... n80vn.html