I don't know which is which, is it my motherboard? (computer stuck and abrupt noise/ looped noise)

[christianalcantara00023]

Hi, I am new to computers and all, I've been playing my newly bought computer for almost 2 years now, and I have noticed this error or I don't know, that my screen suddenly freezes and some looped noises happen. Whenever I play a game like LoL or watching a video. Now I've been doing some research and all and some people (which I found here at this website) stating that it is a hardware problem, most likely motherboard or power supply or RAM. The freeze happens quickly not by minutes but by seconds, and it happens usually every 25-30 minutes. I need help, and some actions, I did the RAM test, and it shows nothing.

Here are my specs
motherboard: MSI A68HM-E33 V2 (MS-7721)
CPU: AMD A10-7860k
Graphics:Nvdia gt 1030
RAM: DDR 3 4(2x)
Windows 10
HDD: Toshiba 1TB
PSU: (I don't know how to check the model but it has on it 650watts)

I bought some low spec parts to try, good thing I did not decide to buy some high tiered spec because I am afraid that this might happen. I am so sorry having no knowledge in computers and all.

 

[christianalcantara00023]

oh, by the way, additional information. when the freeze happens computer still runs it doesn't shut down and all.
I am open to any actions, just need some answers, whether or not I should buy new parts.