actually you are running slightly over t'case which is 67'c if thats stock cooling then you may want to consider a 3rd party cooler
get realtem/coretemp/hwmonitor to make sure your under the tjmax by a good margin. if the numbers are tight then get some cooling asap...
first do some cleaning, getting the dust out will help the cooling.
maybe go into bios and turn down the cpu volts a little. (use cpu-z to see what voltage range you need and set the volts in bios a little higher just so you can boot and are stable) this should reduce your overall temps by as much as 5'c across the board.