Hello, so I decided to upgrade my graphics card for bf3 and my power supply. After installing the new card and the power supply the CPU power on all the lights go on and all the fans work but I dont get a signal on my monitor. I put my old graphics card in still the same problem. The PSU is a corsair cx600 and the graphics card is a geforce gtx 560 ti. Also the mouse and the keyboard don't work when plugged in.