My suspicion is that the eGPU dock is either experiencing some connectivity or power issue, more so with the RTX 4070. My advice would be to check the power supply on the dock and make sure that it is powerful enough to support the power needs of the GPU. You also try to swap out a cable or port, and if you just so happen to have another computer around, plug the eGPU into another machine to rule out hardware compatibility as a factor.