PC not starting with Graphics card Plugged in?....

[THADEADMAN2011]

which port are u using i myself have a 550 ti and it is picky about ports i use the hdmi for my tv also i never use less than a 550 watts psu as i run other hardware an the card will use the extra as i think the min is 450 watt anyhow as joe said try it in another pc also use a different port and try i different monitor or tv depending what u have also if u can try another psu higer in wattage hope that helps if need more jus ask