I m WIN7 Ultimate and I would like to ask what happens when the upper left corner of my screen keeps

You can press F2 to enter the BIOS when the Lenovo logo appears on the boot, keep it in this state, and move the cursor from time to time to see if there is still the above phenomenon at this time.

url] If it still does not work, it is recommended to back up the data and restore the system.

If there is any of the above phenomena, it may be a hardware failure, it is recommended to contact the engineer at the service station in time to solve it, and the following is the query link of the service station.

Lenovo repair site inquiry.

url] ThinkPad service station query.

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1. Check if there is any interference around the computer.

Observe whether there is a strong electric field or strong magnetic field interference around the computer monitor, magnetic field interference is very easy to cause the computer screen to shake or flicker, the elimination method is to place the computer in another open place and then observe, you can also go to another place to take a good computer to test and eliminate, try not to close the display near large electrical products. You can also restart the computer monitor to see, generally the current monitor has an automatic degaussing function during the opening process.

2. Check whether the display refresh rate is set correctly.

1. First of all, right-click the mouse in the blank space on the desktop of the win7 32-bit pure version of the system and select "Properties", and click "Settings--Advanced" in the pop-up attribute interface;

2. Switch to the "Monitor" tab in the pop-up interface, and you can see that the refresh rate of the monitor is set to "60", which is the reason why the monitor screen keeps shaking. Set the new frequency to "75" or higher, and then click OK to return to the desktop.

3. Check whether the graphics card driver is correct.

Sometimes, when you enter the refresh rate of your computer's monitor, you find that there is no refresh rate to choose from, which is caused by the incorrect or too old driver of the previous graphics card, you can check and install the latest version of the driver yourself.

Fourth, the display hardware problem or power supply problem.

The most encountered is the hardware problem, such as the data line connected between the display and the host is not enough, etc., can be solved by the method of replacement elimination, in addition, the display power supply is only focused on the object, in the computer screen jitter and the computer screen flickering fault, the computer screen flicker encounters the most is the display power supply problem, there are also many display aging, display failure, display jitter in addition to the magnetic field or electric field interference, the most encountered is the fault of display aging, The only solution is to take it to a professional repair point for repair. Generally, new monitors can be taken for warranty or replacement, and new monitors are generally rare due to hardware problems.

First of all, you can see the LCD screen flashing, it is not likely to be a problem of refreshing the display frequency, because no matter how low the display frequency is used, people can not observe it, the human eye receives light, and then communicates it to the brain through the retina, optic nerves, etc., and forms an image after analysis and processing, no matter how fast or slow, the human eye can accept it, but the brain is not good, it can't handle the light changes too quickly, it will combine the image received first, and the image received later, synthesize it to display, and finish it hastily, So, it's okay if the display refresh rate is low, it all looks the same, but the higher the refresh rate, the better for the eyes. The refresh rate of the display is low, when observing with other equipment, it can be seen in the video, this is because the interception rate of the camera is much higher than that of the display, which can reflect the difference in the refresh rate, and the display in the video will flash, we can often see the TV set that is filmed in the news, and the display will be flashing, which is the reason.

If you can see the display flickering with the naked eye, there may be a variety of reasons.1The current inside the monitor is unstable, which may be a problem with the built-in transformer of the monitor.

2.There is a strong magnetic field around it.

3.Other software interferes with the display process.

4.Graphics card problems, mostly because the graphics card is not plugged in tightly, or the graphics card is not compatible with other hardware or motherboards5Problems with the graphics card driver.

Either it's a display problem, or a graphics card driver problem, reinstall the driver.

When we use the computer, if the display screen flashes and flickers, then our eyes will be very uncomfortable and uncomfortable. Recently, some users who use win7 flagship computers have encountered such a situation, so what I will share with you today is a detailed solution to the win7 computer display flashing and flashing.

Here's how to fix it:

1. Click the win icon in the lower left corner of the computer desktop, and click the "Control Panel" option in the pop-up menu list;

2. Change the "View Mode" of the "Control Panel" folder to the "Big Icon" option;

3. Double-click the "Display" option below;

4. Click the "Change Display Settings" option in the "Display" folder;

5. Click the "Advanced Settings" option in the "Change Display Settings" window;

6. Click the "Monitor" option in the "Properties" window;

7. In the "Monitor" tab, adjust the frequency of "Screen Refresh Frequency Megamu" to the highest and click the "OK" button.

1. Right-click the mouse button on the desktop, click the attribute pure pin, and enter the attribute setting page.

2. After entering the property setting option, it will be bright, click the settings tab to enter the settings tab page, at this time, you can see an advanced button at the bottom right of the tab, click to enter the advanced settings.

3. After entering the Advanced Settings tab, click on the Monitor tab, and select the screen refresh to do the key game at a frequency of 75 Hz. It's important to note that 60 Hz doesn't mean that there will be a flash.

Set Solution 2.

2. Right-click on My Computer, select the management option, and enter the computer management settings page.

3. Click System Tools ---Device Management--- Display Computer Graphics Card, double-click the interface under the graphics card, and enter the setting options.

4. After entering the graphics card setting properties, click the Driver tab, and then click Update Driver at this time, and the hardware update wizard steps will be displayed.

5. Select the automatic installation software in the hardware update wizard, click Next, wait for completion, and click Next--Finish. Can.