What is the reason for the Win7 laptop screen flicker?

When using a laptop, sometimes the notebook screen flickers. If it is only occasionally flashed, the user may not care, but if it flashes for a long time, it will not work properly. So what is the reason for the notebook screen flickering? Let's take the Win7 system as an example to introduce the reasons and solutions for the flashing of the notebook screen.

Reason one: Display refresh rate setting is correct

Check method: Right click on the blank area of ​​our computer desktop---Property--Setting--Advanced---Monitor:

It can be seen that the refresh rate of the display is set to “60”, which is why the monitor screen is constantly shaking. Set the new frequency to “75” above, then click OK to return to the desktop. Some laptops only have a value of 60HZ, so there is no need to set them up. In addition, if the settings are too high, the display may be damaged, so everyone tries to change it. If it has not been moved before, you can directly select the default.

Reason 2: Check if the graphics card driver is correct

Sometimes when we change the screen refresh rate, we find that there is no refresh rate to choose from, which indicates that the current graphics card driver is incorrect or too Old caused. At this time, it is best not to use the driver in the CD that was purchased when you purchased the computer. Instead, download the latest version of the driver for the corresponding display card on the Internet, open the “Device Manager” and select the display card option in the device list interface. Right-click to select the "Properties" command, then in the window, click the "Driver" tab, then click the "Update Driver" button, and then gradually update the graphics driver to the latest version according to the wizard. Finally restart the computer, if the driver is installed properly, the display refresh frequency selection will appear, and then set the refresh rate to 75Hz or more to solve the problem.

Reason 3: Is there interference around the computer

Observe the interference of strong electric field or strong magnetic field around the computer monitor. Magnetic field interference can easily cause the computer screen to shake or flicker. The troubleshooting method is to put the computer Place it in another open space and observe it. You can also go to another place to take a good computer to test and eliminate it. Try not to bring the display near large electrical products. You can also restart the computer monitor to see that the current display has automatic degaussing during the opening process.

Reason 4: Display hardware problems or power problems

The above situations are less encountered, and the most encountered hardware problems, such as the data lines connected to the display and the host, etc. Can be replaced by the replacement method, in addition, the display power supply is only focused on troubleshooting objects, in the computer screen jitter encountered and the computer screen flickering failure, where the computer screen flashing encounters the most is the display power supply problem, there are many The display is aging and the display is faulty.

In addition to the interference of the magnetic field or electric field, the display jitter is the most aging fault of the display. The solution is only to take the professional maintenance point for maintenance. Generally, new monitors can be taken for warranty or replacement, and new monitors are rarely seen due to hardware problems.

Reason 5: Attacks on viruses or Trojans in computers

Some computer viruses can disturb the screen display. At this time, use anti-virus software to scan the computer and remove the virus.

Introducing here The troubleshooting methods for computer screen flicker and computer screen jitter are basically the methods described above. Sometimes computer virus damage will cause you to open certain software or browse the web for similar situations. In addition, some other webpages will also put some webpage effects to achieve the effect of computer screen jitter and flashing. Finally, remind everyone that if it is really difficult to eliminate, you can use the computer to kill the horse and directly reinstall the system. If the problem is still the same Most of them are hardware failures and need to be repaired by a professional repair shop.

The hazard of flashing the computer screen

The bottom of the brain screen flashes, the black screen, the computer screen shakes, in addition to making our eyes feel tired, and the long time will bring eye diseases to the user. If it is not resolved in time, it will cause damage to your system, because the hidden problems of the system itself may be reflected in the phenomenon of screen jitter.

The above describes five reasons why the notebook screen may flicker. If you encounter this problem, you can try the above method. If the user uses the computer with the screen flicker for a long time, it will bring certain harm, so the user should deal with this problem as soon as possible.