I bought a new graphics card for my PC : nvidia gt 730. I set up the graphics card on the mother board. then I started the computer and installed the drivers. when installation completed it required a restart. the problem is in the restarting. the bois menu shows up, the "starting windows logo" shows up and then nothing .... my pc remains black.........and also after a few minutes the CPU gives a beep. ........ what should I do? ?? I want to play games with my first graphics card and the PC is messing with me