The computer suddenly jumped, and it was full of white comments with colored dots, for what reason,

According to your fault symptom analysis, it may be caused by the following situations:

1. The line contact between the VGA signal line of the display and the host is poor, you plug in the 15-pin female socket of the VGA cable when the fault occurs, or pat the monitor to see if the picture will change accordingly with your beating, if there is a change and can be displayed normally, then there must be a problem with the VGA cable.

2. There is a problem with the internal circuit display board of the display, and the casing should be opened for detection, maybe the component is desoldered, or the integrated circuit is damaged.

3. The problem of the built-in graphics card of the computer, if it is an integrated graphics card, then it may be that there is a problem with the three-color output circuit, because the problems of the integrated graphics card are relatively few on the desktop, and the failure is not as high as the failure of the built-in graphics card of the laptop.

4. Use the substitution method to confirm the specific hardware, the way is to connect the faulty machine to other normal computers, so as to judge whether it is a graphics card or monitor problem.

5. If it is confirmed to be one of the above situations after detailed testing, then you only need to replace the VGA signal cable, or repair the display and graphics card circuit.

Chunchun Computer Appliance Repair Center:

It should be a display screen, I bought ten Acer computer monitors with the unit This phenomenon has occurred, and later I learned that the display screen has not been tested for air pressure, and there will be a flower screen at high altitude.

Or poisoning. Either the graphics card or the driver issue.

Most likely, the monitor is broken.

1. If the graphics card fails, replace it.

Second, the display failure, send for repair.

Turn down the display frequency, or change the power supply.

Screen saver Shake the mouse and it's gone.

Degaussing Some monitors have this function, look at the pins at both ends of the monitor wiring.

What kind of imperfection is it, and to what extent?

Graphics cards and data cables may cause color errors, and the display itself may also cause color errors.

The signal cable is not plugged in first.

Analyze the cause:

1.Color anomalies caused by the leakage of liquid crystal inside the screen.

2.Color anomalies caused by local damage to the electron gun inside the screen.

3.Lightning causes voltage instability and antenna damage, causing abnormal screen display.

Solution:1Get the after-sales replacement screen, and you can directly replace the screen with a new screen if you keep the invoice and it is not man-made damage, and pay the rest of the cost.

2.Directly sell the current equipment (counterfeit and shoddy products purchased in informal places) and buy a brand new ** computer with additional money.

3.Avoid using your computer on rainy days.

The CRT is broken and it is recommended to have it repaired.

The graphics card is broken, it is recommended to find the right model to buy it and plug it in.

There has been no line in the past, and it was a graphics card problem if there was occasional in the past, so try upgrading the graphics card driver.

Adjust the resolution to try

Was it sudden or?

Suddenly something is wrong, it's good to take a look at the repair shop.

Please check the monitor line to adjust the monitor contrast.

Let's see if the cable is loose. The thread that connects the computer to reality.

According to the description and screenshots of the landlord, it should be caused by the abnormal color scheme, and we can look at the standard color again.

The option is grayed out to indicate that the preconditions for the menu command are not valid. For example, in the legend taken by the landlord, the paste or paste shortcut command needs to be "copy" on an object before it works, but now, it is obvious that the "copy" action is not performed first.

Paste cannot be used Instructions There is no copied content in the Clipboard, so it cannot be used.

Paste must be used in conjunction with copying.

For example, if you want to type a piece of text repeatedly in a file, you can select the content that needs to be repeated and "copy".

Then "paste" for the purpose of repetition.

This is just a function prompt made by the system, which belongs to the mouse and keyboard event control; The implementation of this feature reduces unnecessary misinput or manipulation by the user, and the display of black font indicates that the feature is currently available, although these are just general event controls, but they are also gradually reflecting the trend towards object-oriented and service-oriented software development.

You can right-click on the blank space of the desktop, select "Properties" - Appearance--- Advanced --- items, select the corresponding item, and then adjust the color on the right to choose what you want, and you can also change a color scheme in the appearance in a simple way.

In this case, after you install a certain theme, the default color scheme in the theme is like this, so it will be white, you can't see clearly, and you can change it yourself.

Have fun with the computer, and ask me if you don't understand anything

Hello. Right-click - Desktop Blank - Personalization - Window Color, select a color.

There are 2 possibilities, one is that there is a problem with the graphics card driver, and the reinstallation driver is the next.

The other is that there is a problem with the connection cable between the monitor and the computer, plug it in again, or change it and test it!