I have a sony laptop this problem begin when i was playing a high end game on my laptop for 4 straight hours and then boom it shuts down and the screen is not working so i used HDMI and screen worked on my tv and then i noticed laptop was not making any sound of start up i opened up the game and then again it shut off tried it like 30 times and in b/w sometimes it start up and then again shut down within 2-4 seconds i checked ram on another pc is was completely fine i need help solving this problem before i send it to an expert for the fix