If you are using an N card + DP line + DP interface screen, you can enter the window system normally, only enter the bios black screen, but remove the graphics card, and use the interface on the motherboard. There is no problem, this is not related to the DP line, believe The following methods can help you.

The N card usually fixes some BUGs that can be solved by updating the graphics card driver, and some very important and high-level ones need to use BIOS upgrades to solve the problem. In order to improve the support for DP1.3 / 1.4, the N card official website also pushed such an update package, to obtain this update package, you can search for Nvidia DisplayPort Firmware The black screen problem is recommended by netizens. It does not need to replace the device or replace the DP cable.

It is suitable for most of the N cards that use DP cable to enter the black screen of bios.