Hello, I just recently bought a GTX 750 Ti SC from EVGA, a AMD FX 8320, and an ASRock 970 pro3 r2.0. I believe i downloaded all the drivers and the computer works fine for browsing the the internet and has no problems like that. But, When I launch game, I will enter the games menu and everything will be fine. but, As soon as i get into the gameplay or join server my computer will freeze and go to a blank screen and i hear a buzzing sound through my headphones. I tried playing the same game with 8g of DDR3 ram instead of 16 and i still crashed, (I need to restart my computer as their is no way of getting off the blank screen) . So i was wondering , Maybe its the PSU. My current PSU is 450W and i thought maybe i need more because the graphics card maybe nee-dent of more power so it crashes the computer. please Help Me.