HP prodesk 600 G2 Desktop Mini - Fan error / CPU error

Hello, i’ve upgraded my HP from i3 6100t to i5 6500, it works fine but during boot i get error that says my fan is failing which is not true. I can only think that reason for this is TDP difference 35w vs 65w and these systems only ship with T-series cpu’s. Could this error be bypassed somehow from BIOS?

Link for BIOS:
ftp://ftp.hp.com/pub/softpaq/sp136501-137000/sp136525.exe

I can spare few coins for a fix