The computer screen does not display 50, the computer screen does not display

Landlord, you are so contemptible that I think:

It's most likely that there is a problem with the display resolution setting. When the resolution is set too high or too low, beyond the normal display range of the monitor, you will see what you described as a "black screen" that only shows the mouse and not the desktop

Solution: Enter safe mode and change the resolution to normal.

Specific operation: boot up, press the F8 key before the Windows login interface appears, the system options will appear, select "Safe Mode", press the Enter key to enter the safe mode, right-click on the blank space of the desktop after entering the system, right-click Properties Settings, set the resolution to the normal value (if 19 LCD, the normal is 1024 768), click OK, and restart.

I hope the above can be helpful to the landlord.

If it's turned on, it doesn't respond, it's black.

The black screen cannot be turned on, generally because of the poor contact of the memory or graphics card or the quality of the memory or the power supply problem or the poor contact of the CPU (no sound or beep sound when booting up, more than two tones will be asked next week, and a short tick is normal).

Generally to reseat the graphics card and memory card, the main thing is to clean the dust near the CPU and memory, which is easiest to do - or replace the memory or graphics card or power supply.

The capacitor on the motherboard may be bursting, see if the capacitor near your computer's CPU (the capacitor erected like a keg) is bulging, the normal should be flat, buy a few of the same model in the electronic market, and change it for a few cents.

There is a possibility that the graphics card or CPU is too hot, check the fan.

If none of the above is the problem, it's a problem with the display.

It must be caused by a virus in the computer that destroys the system. It is recommended that you reinstall the system.

Open the chassis and plug in a new memory module.

Method: 1. First connect the monitor and the notebook through a VGA or HDMI cable, the goal is that the monitor is the main screen, and the notebook monitor is used as a secondary monitor.

2. Go to [Start] and find the [Control Panel] option in the upper part of the page, and click to enter the control panel details page.

3. Enter the detailed list of [Control Panel] to find the [Display] option, and click to enter the displayed detail page to set it.

4. Enter [Display] - Screen Resolution] to set it, and first set the [Display] option to "1. Move PC Monitor".

5. Then set the [Direction] as the "Landscape" value, the most important setting is the [Multi-Monitor] option, the value is "Expand these options", click Apply.