I have assembled for last 2 weeks ago and currently not allow doing SLI in Nvidia's Control Panel. Then I played for 2 hours. Then rapidly my PC shut down totally. But my motherboard’s light is still presenting a blinking light it means my pc’s is ON. When it tried to do according to the problem nothing happen. Then I again turned the PSU's control switch off/on and pushed the control button on the front of the case again.When I can see the fan turn on and it split again after a second, then the whole thing will be stop again when I am doing this thing but all the times I went out from the steps every times I am getting this problem I didn’t get any solution.