When i was repositioning my GPU support my PC locked up prompting me to do some futher investigating. Whenever i bump GPU or move the Display Port cable with or without GPU support, the PC will lock up or restart with no display. It will 100% restart/freeze if i lift up the end of the GPU were it sags whilst running. I've re-seated the GPU and no problems until i installed the GPU support again and pc shutdown. The PC otherwise runs great and benchmark scores are fine. What could be causing this? a faulty PCI e slot?