PC crashing

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Hey /g/, sorry if this isnt the right place to post this.
My PC has started to crash a lot. Basically I get a black screen all the sudden, and then a churning or whatever low voice from the speakers. It leaves me with no option but to kill the PC from the power switch button, and then reboot.

I have the driver booster program installed, it says all my drivers are fine. Pic related is my specs. The build is still quite new, 2 years old or so. I have no security problems, so no viruses etc. Temperatures should be all fine, speccy says so. Also, crashes happen when the PC has just been started, meaning it hasnt had time to warm up too much.
The PC has pretty much always been doing this to an extent, when a semi friend of mine built this and I got home, it crashed the first time. It was less frequent back then, and I did pretty much nothing. Now it's way more frequent.
Any idea what I could try to fix this?
Heres additional info; it most certainly happens now if I try to play a video game that requires some power, dota 2 on good settings for example.
Also, the mouse and keyboard sometimes do not work, and I have to boot again for them to work properly. Meaning they just light up when I first start the PC, then lose power and do nothing. This is another indicator that all of this may be a hardware problem?

Any help would be nice!