Vibox Warrior 4 Desktop Gaming PC Not working well enough. Am I doing something wrong?

Am I doing something wrong? I have bought a 600 pound Gaming Desktop and I cant run my games very well.

Counter Strike : Global Offensive 120 FPS Max. Usually maintain 60 FPS (Lowest Settings)

H1Z1 : Just Survive Its rare to hit 60 FPS and I maintain around 20-30 FPS

My friend had the same problem then he contacted GeForce and he got it fixed!

Please someone help!