I bought a pny geforce gtx 710 for my dell optiplex 755 the card goes in the pci slot but i believe the motherboard is only giving the card 75watts of power causing my computer is freezing up and lagging but when i turn the resolution down to like 1280x720 it works but when its at the recommend resolution witch is like 3000 it lags but it says on the motherboard slot 1 pci e ×16 (16.1) 75w slot 2 and 3 theres no writing just says slot 2 and 3 but the ports are backwards i would have to turn the card around but then if i do that the card still does not fit any helpfull tips to where i can get a card in here to where i can game lol