What causes graphics card blur?

Causes: 1. Driver, system or software compatibility issues; 2. The graphics card temperature is too high or the connection is poor, such as poor contact with the motherboard PCI-E interface; 3. The power supply is insufficient or the power quality is poor; 4. , Overclocking is unstable; 5. Compatibility issues between the motherboard and the graphics card; 6. Poor contact between the display cable and the display interface; 7. Incomplete installation of the graphics card driver or instability of the driver itself will cause blurred screens, etc.

The operating environment of this tutorial: Windows 7 system, Dell G3 computer.

Causes and solutions for graphics card blurred screens

Graphics cards have symptoms of blurred screens, which we often encounter. Some users don't know the reason, so they usually get into trouble and even replace the original normal hardware. In fact, there are only the following possible reasons why the graphics card has a blurry screen. As long as we follow the step-by-step operation, we can accurately troubleshoot the problem. In fact, there are not many reasons for graphics card blur, which can be roughly divided into: software aspects and hardware aspects. Next, let’s take a look at the causes and solutions for graphics card blur.

Software aspect:

　1. Driver compatibility issues;

　2.System or software compatibility issues;

　3. Game program issues.

Hardware:

1. Bad contact problem of graphics card;

2. Power supply problem;

3. Overclocking instability ;

　4. Compatibility issues between the motherboard and the graphics card;

　5. The graphics card temperature is too high;

　6. Problems with the graphics card itself.

Therefore, most of the problems with graphics card screen failure are related to the graphics card itself. The following are some more effective solutions summarized by the author. I hope to share them with all users. After learning these, you think you don’t need to ask for help. Those so-called masters.

Poor contact problem:

1) Poor contact between the graphics card and the motherboard PCI-E interface, resulting in blurred screens. Solution: Shut down the computer, unplug and insert the graphics card, clean the dust and foreign matter on the gold finger of the graphics card and the PCI-E slot

　2) The display cable is in poor contact with the display interface, resulting in a blurred screen due to a signal cable problem on the monitor. Please replace it. signal line. Poor contact between the signal cable and the VGA or DVI interface may cause screen blur. Please reconnect and tighten the screws on the connector.

Driver issues:

Incomplete installation of the graphics card driver or instability of the driver itself will cause blurred screens.

Solution: Please go to Start->Settings->Control Panel->Add/Remove Programs, uninstall Nvidia Drivers (some drivers include Nvidia PhysX drivers, reinstall or replace drivers with other versions ( It is recommended to install some drivers certified by WHQL, such as 178.24, etc.).

Source problem:

Insufficient power or poor power quality leads to blurry screen.

Solution: Check whether the system meets the power consumption requirements of the graphics card:

1) For the 9500 series, the design power of a single card is 50W. It is recommended that the rated power of the power supply is 250W, and 300W or higher is recommended.

　2) For the 9600 series, the design power of a single card is 90W. It is recommended that the rated power of the power supply is 300W, and 350W or higher is recommended.

　3) For the 9800GT series, the design power of a single card is 105W, the recommended power supply rated power is 350W, and 400W or higher is recommended.

　4) For the 9800GTX/GTS250 series, the design power of a single card is 145W. It is recommended that the rated power of the power supply is 400W, and 450W or higher is recommended.

　5) For the GTX260 series, the design power of a single card is 223W. It is recommended that the rated power of the power supply is 460W, and 500W or higher is recommended.

　6) For the GTX275 series, the design power of a single card is 235W. It is recommended that the rated power of the power supply is 500W, and 550W or higher is recommended.

7) For the GTX285 series, the design power of a single card is 254W. It is recommended that the rated power of the power supply is 550W, and 600W or higher is recommended.

It is recommended to use some high-quality brand power supplies as much as possible to ensure the stability of the system power supply.

Overclocking is unstable:

Overclocking the graphics card, CPU, and memory will result in blurred screens.

Solution:

1) Enter the motherboard BIOS setup program and restore the BIOS default settings or restore the CPU and memory to their default values.

　2) Check whether the graphics card has been overclocked, please restore it to the factory default frequency.

The graphics card temperature is too high:

The graphics card GPU or video memory temperature is too high, resulting in blurry screen. Generally, the overheating of the graphics card may be caused by the interference of foreign matter such as dust in the fan, which slows down or stops the fan speed.

Solution:

Use software (such as Magic Panel, ATI tool, RivaTuner, etc.) or other equipment (such as infrared temperature detector) to detect the GPU or video memory temperature (for some 3D games, the game If all special effects are turned on or the performance setting is too high, it is considered normal if the GPU temperature reaches about 95°C).

System or software compatibility issues:

System or software issues lead to blurred screens.

Solution:

It is recommended not to use the Ghost version of the system and reinstall the original Windows system and graphics card driver. Install system patches and update graphics card drivers.

Game program problem:

Solution:

Reinstall the game. It is recommended to download the latest game client from the official website of the game, install the game patch, and update the graphics card driver. If there is still a problem, it is recommended to change the platform for testing or send the card to a local dealer for testing. Compatibility issues between the motherboard and the graphics card

The graphics card is incompatible with the motherboard, resulting in a blurry screen.

Solution:

If possible, you can replace the same model of graphics card or check the same model of graphics card from other manufacturers. If the problem still occurs, please contact the manufacturer for assistance.

Problems with the graphics card itself

Due to problems with the core of the graphics card itself, the screen is distorted.

Solution:

During the warranty period, if this situation occurs, consult the manufacturer immediately to see if you can replace the graphics card directly at the local general agent or have it replaced by the manufacturer. .

Extended information: Other reasons

Excessive memory frequency causes the graphics card to display blurry screen

Recently a A reader from Shanghai asked for help. The newly purchased Dual-Sensi HD5770 DDR5 Gold Edition graphics card often displays blurred screens during games. This kind of failure is actually relatively common, but during the process of solving it, we found that the reason is somewhat unusual. Therefore, the detailed solution steps are now recorded so that users with similar problems can also find another way to solve the problem.

Shuangmin HD5770 DDR5 is a public version of the graphics card, and there are many similar graphics cards on the market from various brands. Does this mean that other public version graphics card users will encounter similar situations? After our investigation, we found that quite a few users using this public version of the HD5770 graphics card encountered such problems. Therefore, solving the fault encountered by this reader can also help more users.

HD5000 series graphics cards did have screen blur problems before, and AMD quickly updated the driver to solve it. The driver used by this user is version 10.2, and the latest driver version 10.3 has already been released. Therefore, the user was first advised to update the driver, but the fault was not resolved.

After strengthening the heat dissipation, the screen is still blurry

So is it due to poor heat dissipation? The Shuangmin HD5770 DDR5 Gold Edition uses the cooling fan of the public version of the graphics card, and its cooling efficiency is not very high. Moreover, the video memory is placed on the back of the PCB of this graphics card. If the video memory here has poor heat dissipation, it is likely to cause screen distortion. Therefore, it is recommended that users open the chassis and use a fan to blow the graphics card directly to reduce the temperature. Through the monitoring software, we found that the maximum temperature of the graphics card is only about 43 degrees, but the screen is still blurred, which is obviously not a temperature issue.

It’s not a problem with PowerPlay

During this period, we considered whether the 2D and 3D voltage span in the PowerPlay setting was too large, causing the blurred screen, but we immediately rejected this possibility. idea. If it is due to improper PowerPlay settings, the screen may appear blurred in standby, but it will not appear when the game is running. Because the game is in a pure 3D state and will not switch from PowerPlay to 2D state, it is impossible to cause screen blur due to 2D/3D switching.

The problem of lowering the video memory frequency is solved

I kept looking for the reasons, but I still couldn't figure it out. In the end, I had to recommend the user to debug the running frequency of the graphics card. Unexpectedly, just by lowering the memory frequency a little, the screen blur phenomenon completely disappeared. The memory frequency of this graphics card is 4800MHz. After lowering it to 4600MHz, the performance loss is almost negligible, but the graphics card becomes very stable no matter what games are played, and there is no more screen blur.

Post-surgery comments

Generally, when encountering HD5000 series graphics cards with distorted screens, the first thing that comes to mind is to upgrade the driver. After all, AMD has released a driver specifically to address this problem. However, this dual-sensitivity HD5770 DDR5 Gold Edition should be because the video memory itself cannot run stably at 4800MHz. Users who encounter similar problems can also try this method. Or lower the core frequency, or lower the memory frequency a little, there may be unexpected improvements.

Causes of blurred screen after updating graphics card driver in computer Win7 system

I believe many users think so if the graphics card driver is updated, the resolution will become higher and the screen will be can become clearer. In fact, you are right to think so, but after updating the graphics card of some computer systems, not only the screen resolution is not improved, but the resolution is reduced, the screen color quality is also deteriorated, and even problems such as screen blur, black screen or blue screen appear.

So what’s the problem with the blurry screen after updating the graphics card driver in Win7 system? And how to solve the fault problems caused by updating the graphics card driver?

Computer Win7 system appears after updating the graphics card driver Analysis of the causes of blurred screen:

Mainly because after updating the graphics card driver, the updated driver file is not loaded and called correctly by the computer system. As a result, the screen will be blurred after updating the graphics card driver, and the computer system still loads the old version of the graphics card. Driver file, at this time, the old version of the graphics card driver file is already incomplete and causes errors. The color displayed by the operating system becomes poor, the desktop becomes larger, the resolution becomes lower, and the resolution cannot be adjusted.

Solution to the blurry screen after updating the graphics card driver in Win7 system:

　1. First, find “My Computer” on the win7 Ultimate system desktop, right-click on Management, Device Manager, and the device in the display adapter;

　2. Right-click on “Uninstall” and restart the computer , it will be fine after restarting (at this time the system has correctly loaded and called the updated graphics card driver file);

　3. If the color is normal after this method, but the resolution cannot be adjusted, check the system If there is a graphics card driver, then right-click on the desktop-Properties-Settings-Advanced, check the status under the adapter;

　4. You need to reinstall a new graphics card driver and open the latest version of Driver Life 6 official version 2014 , click Driver, Recommended Driver, click Refresh, find the graphics card device, right-click to install it manually, and prompt to restart after installation.

For some versions of the operating system, you will be forced to install some integrated graphics drivers. Find and delete programs with names such as Display Driver in the "Add and Remove Programs" list.

Analysis on the causes of blurry screen after updating the graphics card driver. I believe many users also understand the main reasons. Through the solution introduced in the tutorial, we can also simply solve the problem of blurry screen after updating the graphics card driver.

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