I cant provide a ton of info because im just trying to help out a friend. He got a new power supply so he could get a better graphics card. Right now he has an on board GPU. I'm not sure of either of the brands but i do know the new one is 550w. When he installed it and started it up he got a black screen. So he removed it and put the old one back in and it did the same thing. I wont be able to see him for a day or two but he swears he plugged everything in correctly. Is there any explanation besides not hooking it up right. Any help would be greatly appreciated if not I'll take a look at it on Christmas.