I am assuming you are running on a stock version of Freya with kernel 3.16.
I looked up the internet a bit for your laptop configuration and it seems that you have a NVidia dual GPU. Kernel 3.16 does not support relatively modern Nvidia GPUs (like the GT 755M) properly-because of Nvidia(who BTW Linus Torwalds, the creator of Linux, gave a middle finger...publicly) which does not release the drivers for its models.
So I would not suggest playing games on elementary OS on your configuration. I myself have an AMD discrete GPU and only recently it has got fairly good support on Linux. This is also the reason why your laptop is getting really hot. The Nvidia card without proper drivers support sucks in a lot of unnecessary power causing circuits to get hot and the fan to kick in at full speed. Then when you reboot into Windows, the circuits are still hot and the drivers put adjust the system so that it cools down as soon as possible.
I would suggest(any one of the following, preferably try 3, 2 4,5 ,6 and if nothing works then 1)
- Using a Linux distro with a newer Kernel(like Ubuntu 15.04)
- Install tlp from here. When installed, open a terminal and activate tlp using
sudo tlp start.THis is saved across restarts. When you connect to AC adapter, your laptop will run as it is now. When you remove the AC cable, it will run on low power mode.
- Install powertop from the Software Center via
sudo apt-get install powertop in the terminal. Then open it-
sudo powertop in terminal. Then press Tab number of times till you reach the the
Tunablessection. Press Enter to change each option with "Bad" to "Good" and up down keys to navigate the list. When done changing all to "Good", press Esc or Ctrl+c to exit powertop. Everytime you restart, you will have to configure powertop again using the methods in this point(starting from
sudo powertop)-the settings are not saved across restarts. Here is the official User Guide on powertop-you don't need to read it though.
- Installing Nvidia drivers from their official site after checking all the release notes otherwise if your kernel is not supported, then it could lead to the system unable to boot
- Install bumblebee-since I am on AMD, I don't know a lot about Nvidia drivers but I heard about this project on a lot of discussions. Check out this project here. If I were you I would use it with a grain of salt because the drivers seem to be last released in 2013-check if your system(Ubuntu 14.04-elementary OS is based on this) and graphics card are supported
- Disable the discrete Nvidia graphics card and use the integrated Intel Graphics card-a little Google search will help