Solution to abnormal color tone of Win7 display screen

We know that various problems will occur after using the computer for a long time. The most common one is the screen problem. Many users have encountered abnormal screen color. So if you also encounter Win7 What to do if the display color tone is abnormal, let’s take a look at the practical solutions.

What to do if the Win7 display has abnormal color tone:

The common common display fault conditions are as follows:

1. There is no prompt at startup, and the display often does not use power. .

2. The string display on the monitor screen is relatively blurry.

3. There are pigment spots on the display screen.

4. The display screen produces wavy colorful patterns.

5. The display screen has a strong smell.

6. There is a continuous "pop-pop" sound from the display screen.

7. Under certain applications or devices, the screen flickers, becomes dark (or even freezes), has overlapping images, freezes, etc.

8. The display lacks color, is defocused, is too bright or too dark, and has a regression line.

9. An abnormality appears after awakening from sleep.

10. Some color distortion occurs on the monitor screen.

11. The grating ruler on the display screen is dim.

12. Display color cast, jitter or flip, display becomes blurry, screen flickers, etc.

13. The main parameters of the display cannot be set or changed.

14. The chroma or brightness contrast cannot be adjusted, or the adjustable range is small.

15. The screen size or position cannot be adjusted, or the adjustable range is small.

16. The screen gradually becomes normal. After using it for a while, the background color of the screen turns white. Turn off the screen. After a while, it turns on again and everything is normal again.

Display color cast, display flicker, and abnormal display tone:

1. When the overall color cast occurs on the display, it is mainly due to the There is a problem with the encoding and decoding power circuit,

2, or some small capacitors are discharged, causing insufficient power of the cathode tubes of the three primary colors, resulting in an abnormality in one of the three color data signals.

3. Your screen lacks green signals and only has red and blue signals, which causes the screen to appear color-shifted.

4. Since it does not last long, the possibility of returning to normal is very high. The probability of damage to the display codec power circuit is low, and it is likely to be related to the system software and temperature

5. If the computer graphics card and the monitor interface have poor contact, when the ambient temperature rises, the metal contact points will The expansion restores the connection.

6. Solution: Connect the display to another server for use. If the fault disappears, it may be a fault of the graphics card.

7. If the problem persists, it may be a fault with the screen itself or a fault with the screen cable socket.

8. Mainly check whether the metal pin of the display cable socket is broken or bent. If it is not good, simply replace the display with a new cable and try again.

Display color cast:

1. Problem with the power plug or mobile phone charging cable.

2. Problem with the display tube (repair recommended).

3. Is there any problem with the computer graphics card or graphics card driver (try another one).

Flashing screen:

1. The refresh frequency should not exceed 85Hz and should be as low as 75Hz. The refresh frequency is too high.

2. There is something wrong with the computer graphics card or graphics card driver.

3. Are there any interference signals under the application conditions?

4. The voltage is unstable, the display itself has faults, and the electronic components inside the display are desoldered, etc.

Common fault detection of computer graphics cards is as follows:

1. Poor contact of computer graphics card Common faults:

Poor contact of computer graphics card This phenomenon often results in common faults such as the computer being unable to boot and an alarm sound, or the system software being unstable and stuck.

The root cause of poor contact of the computer graphics card is mainly oxidation of the gold finger of the graphics card, dust, poor quality of the computer graphics card or problems with the main chassis partition, etc.

For the poor contact caused by the oxidation of the red gold finger, you can use an eraser to scrub the red gold finger to deal with it; for the bad contact caused by dust, it can generally be dealt with after removing the dust.

For poor contact caused by the quality of hardware configuration, it is usually checked according to the replacement method, and the replacement of the graphics card is generally used to deal with it.

For the poor contact phenomenon caused by the main chassis partition problem, usually the computer graphics card cannot be completely inserted into the graphics card slot. You can choose to replace the main chassis to eliminate it.

2. Compatibility issues:

When the computer is in compatibility mode, common faults include failure to start, alarm sounds, unstable system software and stuck or abnormal noise on the display screen, etc.

Graphics card compatibility mode faults usually occur after the computer is installed or updated. It is often caused by compatibility issues between the motherboard and the graphics card or the motherboard slot and the graphics card gold finger cannot fully contact.

Common faults of computer graphics card compatibility mode are usually checked by replacement method. Generally, replacement of graphics card is used to detect faults.

3. Common faults of computer graphics card electronic components being damaged:

Computer graphics card electronic components are damaged and common faults often cause the computer to fail to boot, the system to become unstable and stuck, and the screen to flicker and other faults.

Damage to electronic components of the graphics card generally includes damage to the graphics card chip, damage to the graphics card BIOS, damage to the independent graphics memory, damage to the graphics card capacitor or damage to the field effect tube, etc.

For the common fault of damaged electronic components of the graphics card, it is generally necessary to carefully measure each signal in the circuit of the graphics card to identify the damaged electronic components. After finding the damaged electronic components, it can be replaced.

4. Common faults of graphics card overheating:

Because the graphics chip generates a lot of heat when running, it must have better thermal conductivity conditions. If the fan is damaged, the graphics card will be damaged. It cannot work normally if it is overheated.

Overheating of the computer graphics card often causes common faults such as system software instability and freezing or screen flickering. If the computer graphics card overheats, just replace the fan.

5. Graphics driver faults:

Graphics driver faults often cause system instability, stuck, screen flickering, incomplete graphics, and other faults.

Common faults with graphics card drivers mainly include graphics card driver loss, compatibility issues between the graphics card driver and the operating system, graphics card driver corruption, and the inability to install the graphics card driver.

For common graphics card driver problems, the first step is to go to "Network Adapter" to check if there is driver software for the graphics card. If not, just reinstall it.

If there is, but it is on the graphics card driver! ", indicating that the graphics card driver is not assembled, the driver software version number is incorrect, the driver software is compatible with the operating system, etc.

Generally delete the graphics card driver and reinstall it. If it is still there after installation!", you can download a new one version of the driver software installed.

If the graphics card driver cannot be installed, there is usually a problem with the driver software or a problem with the registry file.

6. CMOS setting faults:

CMOS setting faults are caused by incorrect settings of the relevant options indicated in the CMOS.

Common CMOS setting faults mainly include: motherboard with integrated graphics, and the graphics shield option in CMOS is not set correctly.

Such as the "AGPDrivingControl" option setting is incorrect (usually "AUTO"),

The "AGPApertureSize" option setting is incorrect: "FASTWriteSupported" option setting issues, etc. .

The CMOS setting is incorrect. Generally, you can load the default setting BIOS value and change it.

7. Graphics card overclocking problem:

Graphics card overclocking problem refers to network failure caused by increasing the speed of the graphics card and increasing the output power of the graphics card during use.

After a problem occurs, you can repair the frequency to the factory default.

If necessary, it is recommended to install Driver Wizard 2008. After installation, use its automatic upgrade function.

It will automatically install and download the latest version of the driver, including network port, external sound card, Computer graphics card, USB, etc., eliminating the pain of finding and assembling.

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