Voltages

So twice now I have went to tab out of a game and it just showed a black screen, I had to turn it off via the power button. And just now, I went to launch the game Bully and I just got a black screen and nothing came up. The first time I can't remember what game it was, possibly Assassin's Creed...

just wondering if this is a good pair

http://www.amazon.com/Corsair-Builder-Series-Watt-CX600/dp/B0092ML0OC/ref=sr_1_1?ie=UTF8&qid=1388576734&sr=8-1&keywords=corsair+600 Thanks in advance :)