I have a dell dimension 8400 running windows xp, 80gb hard drive. I also have an emachine running windows vista, but the motherboard blew. therefore i took pretty much all of the components out of the emachine and put them in the dell. The thing is I slaved the 250gb seagate drive and i can access the folders, but i want to run the vista. When i turn the 80gb drive off in the bios and leave the 250gb drive on it tries to load. the computer says "try to do a repair load" or something along those lines or "start windows normally". if i choose start windows normally it just restarts. i tried to do the repair startup but it didnt work. says it couldnt fix the problem. i asked a friend of mine he says vista should load up. what should i do???? please help.