I just bought a ASUS 1050ti and I tried putting it in, fitted fine but I got an error message saying "Your PC/Device needs to br repaired" "The Boot Configuration Data for your PC is missing or contains errors" with the error code "0xc0000001", my specs are 8gb RAM, CPU is Phenom X4 810 II 2.6ghz and my old GPU was a 650ti BOOST and I tried putting it back in but it still came up with the same error message. I'm not sure on my PSU but I THINK its a 700 watt.