nvidia-smi:Failed to initialize NVML:Unknown Error

I have a Geforce RTX 2070 that I want to use as an acceleration card (with CUDA). When I connect the monitor to the PC integrated graphics interface (not 2070) after running Nvdia-SMI, I receive the following error.2020-09-14_15-00-40
But if I plug the monitor directly into the 2070, it works,I want to know how to do the calculation with 2070 when using an integrated graphics card for display
driver version: 430.86
Computer system: Windows7 64-bit
I hope to get some answers. Thank you