System fan runs constantly

[dixiedoodle]

can failing processor cause fans to work harder?

 

[twelve25]

Probably not.

I'd suspect dust buildup, poor ventilation, or some malware or process creating constant CPU activity.

 

[anxiousinfusion]

Don't overlook the fact that summer is coming (for those of us in the northern hemisphere).

 

[icraft]

Download speedfan and/or realtemp and/or coretemp and see what your core temps are.