I've a 4 year old laptop that is consistently running 60-70 degrees Celsius. I cleaned the heatsink and replaced the fan as it was previously running at 90 - 100 degrees and although it was clearly overheating, the machine was not shutting down to protect from this.
Once I replaced the fan and cleaned the heatsink, the temperature dropped to 60/70 and I then applied new thermal cooling paste to the cpu and gpu which at first brought the laptop down to the comfortable temperature of 40.
A week later and it's back to running high and I'm not sure what else there is I can do for it. It sits in a well ventilated area and I've tried using a stand to improve air intake.
Could it be that my laptop is just worn out?