Laptop shutting down around 5 mins into any games

Laptop, model is "E1-531-B9604G50MNKS". Windows 8. I think thats the model, hell if I know.

Now I know what you are thinking, its a overheating issue, that's not true at all.

I have turned off this feature where it overheats and it auto shutdowns though power opitons, yet, it still does it. I have never see a laptop so cold have a overheating issue so I cannot be that, lets move on.

This laptop is about a year old? This is my mums laptop and I upgraded it to 8.1, re-installed directX which was such a pain (after I tried everything and become desprate ), tried other games, restored it to factor new conditon, did disk error scans, started the **bleep** laptop up though Safe mode, upgraded the drivers, updated every single thing, did deframents. I have really done everything possible even little things from making the game windowed or running Comptibility mode. There is nothing else I can do. I have changed power options, yes. There is no way to fix this peace of **bleep** laptop my mum wasted money on, even the trackpad freezes from time to time while the laptop remains working this lasts for a few seconds. This is the second product of Acer my mum has bought and its not going really well, both of them were not that great and had issues but this is by far the worst state I have seen a laptop being in and now I don't know if its just windows 8 or Acer but from what I have heard as a pretty hard-core gamer windows 8 is not to bad sooo, acer... I use windows 7 on all my systems and I will probably install it on my mums laptop.

Right now I am limited to what I can do, I cannot download any updates or such for that laptop at the momment It has recently been retorted to factory new or refresded because it would not start up. 

We are not sending it away to get fixed (What a waste of money), if it comes to it my mum will use my HP not ACER laptop while I use my computer. My laptop is what 4 years old? Still works fine compared to this Acer laptop.