CPU usage 100% when I play dota2, shortly after, laptop crashes.

[mortiimatii]

i have this laptop since a year ago, played the game just fine until today, the day it came back from service, i had a hard disk problem so i had to replace it. The very weird thing is that I even played a game today earlier and it worked just fine, but since about 3 hours ago the game just lags for the first 5 minutes, and then crashes my laptop completely. i must add that it overheats, but I opened my laptop about 4 months ago and cleaned the cooler competely. Please help me.

 

[Rams Anirudh]

Do you have a fps drop in the game? If so its GPU problem.