I bought the foldable mecer notebook less than 6months ago on one day only

I bought the foldable mecer notebook less than 6months ago on one day only. Everytime I use the laptop it says my laptop has ran into a problem and needs to restart. I'll be in the middle of an assignment or work then it will just restart. The model type is Mecer 13.3 inch 2-in-1 Move light N4120 4GB RAM 128GB I bought this on the 25th of August