hi, i bought a geforce gt 630 and have followed intallation instructions but when i put the card into my desktop and start the computer i recive no video at all my monitor is black . i turned off my computer ,removed the card and restarted my desktop and it ran perfectly i havent installed anydrivers beacuse i cant see the screen to instal them and if i try installing them before putting the card in it doesnt work .. please help ive been goin at it for 6 hours and cant get it