Hey guys recently I bought parts to make a new computer. I installed a gigabyte ga-78lmt-usb3mother board and a msi graphics card a corsair cx600m power supply and a AMD processor with a nzxt phantom case. I had problems turning the computer on from the beginning. I tried taking everything out and putting only the motherboard the processor and the graphics card into the power supply and still nothing happened. There was no startup screen. Please help.