hi, this is my first post. please excuse me for any lack of knowledge and knowing of site procedures. with that said, thank you in advance. so I have a Gateway FX4710-UB003A pc, specs include: 400watt power supply 6g memory intel core 2 quad q9330 processors windows vista 64 bit I was using a geforce 9800 gt, untill it stopped working and was causing my pc to restart. so I took it out , switched video to the onboard mother slot and have had no problems with pc. I went to bestbuy today and bought a XFX Radeon HD 6670 and installed it into my pc, AND IM GETTING BLACK SCREEN. I meet all the requirements for the video card with my pc. the fan is spinning, so I guess its getting power. I thought it was weird though bc my geforce 9800 gt had to be powered by my power supply via 1x 6pin plug in. this card does not have a plug in for power. maybe thats my problem I dont know. the fan is spinning. please help must play diablo 3!!!