Ghostly CPU Overheat Problem

nopcfromnow

Commendable
Nov 15, 2016
5
0
1,510
Hello Everyone,
I began to have tempratures around 80 Degrees to 90 degree C at idle with my H80 and 6700k , Asus Z170 , So i checked if its plugged correctly ,checked thermal paste .. checked if all fans are running however despite everything working correctly , I changed CPU fan and got H100iv2 . For few days everything went fine but then suddenly again same problem came .. Temps were 88*C at idle.. So I again checked and everything was fine .. I then thought of updating BIOS ,still the same Problem. I entered BIOS and observed that CPU fan isnt detected in Bios though its running . Now whats happening is that my fan is randomly getting detected when this happens temps becomes normal, I also checked the wire , its in CPU_,fan I tried at others but it doesnt detect.

Please Help
 

no changes were made... Can mobo be the culprit ?