Hi guys, I recently built this PC http://uk.pcpartpicker.com/user/John92/saved/C8FBD3 and I had problems starting the PC but fixed it, and yesterday when I turned on my PC and went to test my graphics cards on the benchmark tests it couldn't detect my graphics cards, I've looked onto the system components files and it shows the graphics cards but there's a warning symbol on the little image before you click on the file, I clicked on the file and the PC said there was some sort of error message I can't remember what it said but I don't think it was good news can anyone help me, this is really stressing me out and this is my first ever build?