What s the deal with the computer that often flickers when it turns on

1. It may be that the screen refresh rate is set too low, resulting in the inconsistency between the screen refresh speed and the refresh speed set by the graphics card.

In this case, you need to open Windows Settings, go to [System] - [Display] and click [Display Adapter Properties], and set the value to be the same as the graphics card in [Screen Refresh Rate] in [Monitor].

2. It may be that the computer graphics card driver is abnormal, resulting in the computer display screen stuck, flickering and other phenomena. This kind of green situation requires the use of third-party tools such as driver life, driver wizard and other third-party tools to reinstall the graphics card driver, and restart the computer after completing the installation to restore the normal screen display.

3. It may be that the computer graphics card chip is damaged (chip soldering, video memory burning, etc.). In this case, you need to apply for an after-sales service and replacement of the graphics card (if it is a laptop, the entire motherboard needs to be returned to the factory for repair, because the graphics card chip is soldered to the motherboard and cannot be independent).

The specific causes and solutions are as follows:

1. Caused by current interference. This is the case when all displays (including TVs, projectors, etc.) flicker. A relatively simple test method is to use a notebook, if it is plugged in and the power supply will flash, and if it is not connected to the power supply, it will not flash, you can judge that it is current interference, which is more common in industrial electricity, and the simpler way is to remove the ground wire on the power plug.

2. After entering the system, it has been shaking. This is usually the case when the refresh rate is set incorrectly. Today's monitors can generally be adjusted automatically, and you can press the "auto" button on the monitor to automatically adjust the high display.

3. Some monitors don't have an auto-adjust button, so you need to change the properties of the display. Right-click on the blank space of the desktop, select "Properties", select the "Settings" tab, click the "Advanced" button, select the "Monitor" tab in the pop-up dialog box, and select "Screen Refresh Rate" to "60 Hz". If it still flashes, change it to a different "screen refresh rate".

<>4. If there is a sudden flickering phenomenon, you can first check whether the plugs between the monitor and the host are loose.

5. In addition, if you display the attachment with the influence of magnetic field, such as the speaker is on the side, it will also cause such a phenomenon, just move the speaker away.

1. If there is flickering during the display of the Lenovo screen and before Windows starts, it is usually a hardware problem. If it is an all-in-one or laptop, it is recommended that you apply for repair of this machine; If it is a desktop, it is recommended that you replace the monitor to test, if the replacement of other monitors is normal, it is recommended that you repair the original monitor, if the replacement of other monitors also flashes the screen, it is recommended that you repair the desktop host.

2. If the display is normal when you first boot up, and the problem occurs only after booting to the Windows desktop, you can try to turn off the power management of the graphics card so that the graphics card does not reduce the frequency and works at full speed.

3. Interference from external signals (mobile phone signals or high-power device signals, etc.) may cause screen flickering, so please keep your computer away from these devices.

*If you still can't succeed according to the above method, click to enter the homepage and consult the engineer online to solve the problem.

Right-click, desktop properties advanced, monitor options, turn up the refresh rate, generally 75 Hz.

Also, is the driver of the graphics card installed correctly?

Causes of display jitter.

The monitor refresh rate is set too low.

When the refresh rate of the display is set to be lower than 75Hz, the screen often shakes and flickers, so adjust the refresh rate appropriately, such as setting it higher than 85Hz, and the screen shaking will generally not appear again.

The power transformer is too close to the monitor and chassis.

When the power transformer is working, it will cause large electromagnetic interference, which will cause the screen to shake. Keeping the power transformer away from the chassis and display can solve the problem.

Inferior power supplies or power supply equipment are aging.

The workmanship and materials used in many miscellaneous computer power supplies are very poor, which can easily cause the circuits of the computer to be poor or the power supply capacity can not keep up, and when the system is busy, the display will especially appear screen shaking. When the power supply equipment of the computer starts to deteriorate, it is easy to cause the same problem.

The speakers are placed too close to the monitor.

The magnetic field effect of the speaker will interfere with the normal operation of the display, causing the display to produce magnetic interference phenomena such as screen shake and color crossing.

Viruses do the trick. Some computer viruses can disrupt the screen display, such as: character inversion, screen shaking, graphic flipping display, etc. The ubiquitous screen shake scripts on the internet are enough to make your head as big as a cow after a hit.

The graphics card is not in good contact.

After the graphics card is reinserted, the fault can be troubleshooting.

Caused by write caching after the win series system.

If this is the case, disabling all drive write-back caching in Control Panel - System - Performance - File System - Troubleshooter will resolve the problem at all.

The power filter capacitor is damaged.

Open the case, and if you see the top of the power filter capacitor (the largest capacitor on the board) bulging up, then the capacitor is broken, and the screen shake is caused by a power failure. Once the capacitor is replaced, the problem can be solved.

Normal reaction, the graphics card driver should be loaded when the computer is turned on, and it is normal to black the screen. It is estimated that your LCD monitor sometimes interrupts the data signal when it starts, and the display flashes.

It flashes when it is turned on.

Or is it flashing after Windows starts?

Take a look at the graphics driver.