Notebook computer unplug power screen will be black how to do

1, right click on the desktop space, select click Screen Resolution;

2, click the Advanced settings, set the screen refresh rate, you can set to 60Hz or all set to 50Hz;

3, right click on the lower right corner of the power icon, choose to open the Power options, click "Change plan Settings";

4, then click "Change advanced power settings";

5, locate the Intel (R) Graphics settings and click to expand, if the above screen refresh rate is set to 60Hz, set up the use of batteries and power supply for maximum performance, if the above screen refresh rate is set to 50Hz, The battery is set and the power supply is connected to the minimum performance;

After the above setup, when we unplug the power, the notebook computer screen will not appear black phenomenon.