Hello guys. I bought a new graphics card, a new psu and new memory cards. I installed them all correctly on the mainboard. But when i try to boot, the fans are spinning but the monitor says no signal. here is my system: amd phenom ii x4 965 cpu evga gtx 560 ti graphics card corsair 2x4gb 1600mhz memory card cooler master gx 750w psu Asus m4a77td mainboard What should i do? Please help me. i do not own the old graphics card anymore.