|Well here's a clue:|
Post your question in the appropriate forum. This one is dedicated to networking issues.
Then when you want help provide more than a 4 word plea for assistance. You need to give information about your system such as whether it is a laptop or desktop, What is it doing that you think it is overheating. What temperature is it operating at. Is it locking up and/or rebooting spontaneously.
But before you do anything further how about you use the search box at the top of screen and see what others have already said about overheating issues and how to resolve them. Or did you really think you were the first person ever to have an overheating PC?
Goin' Fishin' (Some day)