Why is my cpu so hot

Why is my cpu idle at 73 dgres it is worrying me it is an amd 7850 apu on a asrock fatality motherboard with a corsair h60 it is powered by the corsair cx750m and it shuts down randomly please help 

Reseat the cooler, re-apply thermal paste, make sure pump is plugged in.

Also is the GPU/CPU overclocked?

Check the voltage as well.

You might need to use washers to help with pressure for AMD , I had to do it with my h100 a while back .

Except for that , follow the above .

Never thought about that when I was cooling my APU. I did notice the screw pegs were quite easy to turn until I hit the point where it could not turn any more.