Please help..When i connect my g75vw to my TV (by hdmi) , after 15 min. It crashes and sounds weird but loud and the image is there , and i have to restart the laptos holding the power button . I dont know whats going on , please , someone who can he...

hello guys !I hope someone can help me... The problem is when im watching movies or playing games after some minutes (like 20 or 30 min.) my g75 stops working because gets display in black and one of the fans start to accelerate. I've updated bios ...