Big Tyhoon

[350ypvs]

I have just fitted a Thermaltake big typhoon and 120mm fan but with the fan connected to the cpu fan socket when exiting bios i get "cpu fan speed incorrect system will shut down in 2 seconds" and it does.
The board is a Winfast K7ncr18d pro.Thermaltake tell me to disable the fan speed sensor in bios but i can't find one to disable!!
The origional fan shows 4200rpm and the BT fan shows 0rpm.At the moment i have the BT connect to the chipset fan socket and the origional fan connected to the cpu fan socket and hanging out of the top of the case.

Any help would be greatly appreciated.

 

[350ypvs]

I have just connected an 80mm case fan to the cpu fan socket and it reads the speed for that.With the BT fan connected it reads 0rpm so i will have to get another 120mm and try that one.Will any 120mm fan be ok or are is there one in particular that would be worth looking for?