Computer Problem

Hello, I am having problems with my computer. It's a very new computer and very expensive. It has liquid cooling and 16gb of ram with 2 hard drives one filled with 2 terabits of storage. One day I started playing Sims 4 and then suddenly the screen went green blank. Now after a couple of restarts it started again so I played fallout 4 and it did the same thing. The next time I restarted It the screen wasn't turning on but the whole computer glows green like normally and the mouse glowed but not the keyboard. The screen would not work or not connect to the pc. So if you have a solution please help.