Choose other country to get service
When using C port to DP, it shows no signal. Changing multiple cables does not work.

Users are advised to use C to C and DP to DP cables. It's possible that the integrated graphics card bandwidth is insufficient to support a 4K 160Hz refresh rate, so the screen may not light up. If you want to use the integrated graphics card to output signals separately, you need to unplug the power supply of the discrete graphics card and restart the computer.