Hello, I have the Dell precision 7730 with i7 8850H and AMD radeon pro wx 4150, I bought Nvidia Quadro p4200 to upgrade the GPU, I sent the laptop to service center and when they changed the GPU, the laptop didn't boot up at all, the power led blinked once with the keyboard after one second the laptop shutoff without any screen flickering, they returned the old GPU and the laptop booted normally. I'm wondering if I missed something or the GPU is already dead?! Note: I bought the Board to board connection because the quadro need additional connection with the motherboard.