What happens when a desktop computer display suddenly goes dark? 60

It could be the following:

The color of the screen is black, but if you look closely, you can see the desktop, which is called dark screen. It may be that there is a problem with the lamp, and the aging or short circuit of the lamp will make the display screen dark; It may also be that the motherboard has no voltage for the high-voltage board, and the motherboard has problems, aging or short circuits, and most of them can be repaired, and it is not necessary to replace the motherboard.

This is a normal phenomenon, when the laptop is powered by a battery, its power mode is energy-saving mode, which is when the laptop's screen automatically reduces the brightness to save the battery's power. If this is not the case, it may be that the power mode settings have changed. Resetting it and saving it will be fine.

How to set up: Click on the icon of power supply in the lower right corner, as shown in the figure below is an icon of battery and plug, click it. Finally, click Save to complete the setup.

1. The mains voltage becomes low, resulting in insufficient power supply for the display. A voltage regulator is recommended.

2. Some monitors are equipped with a light sensor at the front end, which will change the luminous intensity of the display backlight with the change of external ambient light.

Provide a comfortable light source for the user. If this is the case, it is normal.

3. LCD display.

The internal power strip is faulty, resulting in insufficient power supply. or the backlight lamp is aging, and the luminous intensity is weakened. If these two cases are the case, it is recommended to send it to a professional repair point for repair. Identification method: replace a good monitor for testing.

This situation is generally a problem with the monitor.,But you said that it slowed down after suddenly getting stuck.,It's a coincidence.,The host won't have any impact on the display.。

It is recommended to check whether the cable is loose, and you can shake it to adjust the cable. If there is a change in the brightness of the screen, adjust it.

Maybe there's something wrong with the monitor.

The solution for the desktop screen to automatically dim is as follows:

1. Open Windows 7, select "Control Panel" from the "Start" menu, and click "Open".

2. In the Control Panel, select "Power Options" and click "Open".

3. Select "Change Power Plan" in the window, and then click "Open".

4. Select "Change Power Plan Settings" in the window, and then click "Open".

5. Set off in the window of "Enable Adaptive Brightness", the problem has been solved.