I just received a few upgrades for my pc (for Christmas), and I spent the afternoon taking out my motherboard, cpu, and cpu cooler to replace them. I had some trouble with the cables but after a while I got everything connected. Everything seemed to work but then when I turned the pc on it would turn off, then on, then off, then on and then the motherboard displayed there was a problem with the GPU, I tried hooking up my monitor to the GPU, and to the motherboard it self but neither worked. The specs are, GT 1030, intel core i5 6400, Z390 ud motherboard. Thanks for any help.