I got a brand new computer today nvidia gtx 260, antec ew 650, amd phenom x2 3.1ghz, wd 500 gb hd, samsung dvd drive, gigabite GA-MA790X-UD4P, antec 900 case. When I turn it on everything runs, keyboard lights up and mouse and the gtx 260 fan is spinning but nothing displays on my screen, i tried changing pcie slots, changing the power connectors, everything. but nothing seems to work. I am using a vga cable to connect my 260 to my monitor and a dvi converter to my gtx 260 because theres no vga port on the gtx 260, is that impeding it to work? anyone got any ideas to fix? help? I also hear no system beeps but i dont think i got a system speaker....