I have a laptop that has had heating problems for a while so I decided to go ahead and finally replace the thermal paste. It was my first time applying thermal paste but I read up a lot on how to do it and watched some videos. I applied using the spread method which I am realizing is not the best method. My laptop begins to load windows then abruptly shuts off which seems to me like heating issues again. Since replacing the thermal paste the fan won't start when I power up the laptop which I think is the main reason for the heating issues. Is there anything I can do and why won't the fan start up?