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Had them on my laptop since forever, they happen ~3 times a week, usually when continuously playing games. Had my first crash during an official yesterday, so i guess i need to actually do something.
Basically the screen goes completely black, the cooling system becomes really noisy, but i can hear the mumble, 3 seconds after that all I can hear is the sound loop of the last word that i heard in mumble and my laptop simply turns off without a BSOD or anything.
Another thing i want to mention is that a year ago the screen didn’t go completely black before the shutdown, instead everything freezed, appearing like a broken matrix with misplaced pixels everywhere and a loud “bzzzzzzt” sound, pretty much shat my pants the first time i saw that, almost felt like my monitor/graphics card died.

Any help is appreciated.

Quoted from Spike Himself

Sounds very much like graphics card overheating.
Actually it sounds like it so much, I’m just going to say it: Your graphics card is overheating.

It is.

Quoted from Spike Himself

Open up the laptop, get rid of dust (don’t break anything) and get something similar to this: http://www.gadgetsandgizmos.org/wp-content/uploads/digital-cowboy-crf-102-laptop-cooler_1.jpg

I do have an external laptop cooler and I’ve cleaned everything from dust.

I was thinking about underclocking the graphics card, would it actually reduce the heat?