Chisty

Did you install any new program to your laptop? Also did you try to update any of the programs you have? If this problem happen after you install a new program, remove it.

What is the Brand,Model, and age of your laptop? It could be a issue with your laptop model. This will help us provide the best support for you.

Also when was the last time you got it cleaned out of all of the dust from the vents?

manmur