The computer screen is black for no reason, and the brightness cannot be adjusted.

Written in the beginning , If the computer has “” Sunflower ” The software can look down , The author records the solution according to his own experience .

The computer can be turned on normally , The screen will not light up , But looking at the computer screen in strong light, you can see something , But it's dark . Or the brightness of the computer screen cannot be adjusted .

terms of settlement ：
1、 Long press the power button 15 second , Power on after forced shutdown . Until you can see the contents of the screen .
2、 After power on , Desktop found This computer Right click management , Find the monitor , Click on the open , Unload the driver inside , Remember to delete the driver file when uninstalling .( At this time, the monitor drive is sunflower drive , What we need to install is a general monitor )

Pictured , Uninstall this device

3、 Find and click this button on the page ( Scan for hardware changes ), At this time, the computer will reinstall the monitor and independent graphics card driver

4、 Generally, at this step, you will find that the brightness can be adjusted , But if it still cannot be adjusted , Please check whether the monitor driver is still the original driver instead of the general monitor , Description when unloading the monitor driver , File not deleted , Repeat step 2;

5、 The above steps can solve the problem of unprovoked black screen , Unable to adjust the brightness , I hope it can help you .