How to adjust the brightness of the display screen?

It can be adjusted by shortcut keys, and you need to consult the notebook manufacturer.

You can also adjust the screen brightness in the settings:

Click on the lower left corner of win 10 system to start-> Settings-> System-> Display Options.

In addition, you can click the notification function button on the right side of the taskbar to pop up a menu, and you can also find the brightness level function adjustment bar in this menu.