The thinkpad E431 has been bought for 3 months, and the screen often has vertical lines.

Dear Lenovo users, hello!

According to your description of the problem, it is recommended that you test under the BIOS, if the BIOS is normal, it is recommended that you update the graphics card driver, when updating the driver, please uninstall the original installed driver and then reinstall it, press F1 or F2 to enter the BIOS when booting up; If the situation is still under the BIOS, it is recommended that you go to the service station to test the hardware.

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1. Test the external monitor to see if the external monitor has a similar situation, so as to determine whether this fault is caused by the host part or the screen head part.

2. The external display is normal, please re-plug and unplug the screen cable interfaces on both sides and fix and check whether the cable routing at the screen axis may be squeezed and interfered with by other components.

3. The above operation is invalid, replace the LCD screen test, if the fault disappears, it is the LCD screen failure, the fault still exists basically the screen line problem, which is a hardware failure, and the new machine needs to contact the after-sales service for detailed testing.

This phenomenon is a problem with the screen, I have repaired this kind of machine, and I can be sure that the screen is broken.

Hello: Regarding the issue of screen flicker, we need to rule out a problem!!

When the screen is flashing, it starts flashing before it is turned on and does not enter the system, or it starts to flash when it enters the system.

Is the flickering of the screen regular or irregular. And there is no slight shaking of the screen during the flashing process, and the fault is mitigated or deepened!!

Have you installed a memory module, updated any patches, etc.!!

If it is before entering the system, the screen will start flashing and shaking the screen failure will not be good, it is recommended that you send the repair service station to have a professional engineer to detect the hardware, if there is a regular upward jitter flashing in the system, it is recommended that you re-update the graphics card driver, or enter the system security mode to observe the recurrence of the failure! Finally, consider whether it is necessary to solve the problem by replacing the system!

Provide you with a way to install the win7 system.

In order to help you more conveniently, you can fill in the details below**, and the staff of Beijing headquarters will contact you, and we will do our best to help you.

Press F8 to move to the advanced option immediately after booting up, select "The latest correct configuration" Enter to repair, and press F8 to enter the safe mode to restore the system or reinstall the system (if the reinstallation is also a blue screen, it is recommended to overhaul it).

If such a problem arises due to software conflicts, inappropriate drivers, or system problems, you can restore the system in safe mode, or you can't reinstall the operating system, don't install software, patches, drivers, etc., and see if there are still problems with booting? If you don't install drivers, patches, and software step by step, and find something that isn't suitable, don't install it.

Please tell us more about how you performed on the computer before the blue screen and how you operated. **What software, patches, and hardware have been upgraded? Tell me in detail what you did before the blue screen, it may be the occurrence of the blue screen caused by these operations, please ask me if you have any questions (I will re-follow you according to the information you provided).

3. If the blue screen shutdown does not often appear at boot, it is OK, or it doesn't work, please press F8 to turn on the advanced option to let go, select "The latest correct configuration" Enter to repair, and restore the system or reinstall the system if it doesn't work.

4. If it is caused by hardware problems, or if the hardware is overclocked and the BIOS battery is discharged (restore the BIOS factory default), it is recommended to plug and unplug the graphics card, memory and other hardware, clean up the hygiene in the computer, and polish the gold finger of the graphics card and memory (test whether the temperature of the hardware is too high).

5. The computer is opened abnormally when the optical drive is being read, which can lead to a blue screen, and the disc can be re-inserted into the optical drive. When the computer is plugged and unplugged with power, it can cause a blue screen, restart the computer to repair it or fix it according to the third item above.

6. There is also whether there is a problem with the hard disk, use the system's built-in function to repair it or repair the bad sectors of the hard disk, or format the hard disk to repartition and reinstall the system, or if it doesn't work, you need to change the hard disk.

7. Recently upgraded hardware, these hardware is not compatible with the system, such as: memory, graphics card, etc., please replace the hardware to try (until the place where the hardware is upgraded is replaced).

8. If it is caused by hardware problems, and you can't find the problem, it is recommended to go to the maintenance there for maintenance.

9. Playing games with a blue screen, it is generally a problem with the game itself, the configuration of the computer conflicts with the game, the graphics card, the graphics card driver is not suitable, the temperature of the CPU and graphics card is too high, the memory is too small, etc., and the other is when playing the game and selling the show, watching, at the same time, it is easiest to do other operations Blue screen, so don't operate other things when playing games and watching the sail (see the blue screen problem is the same as above).

2. Some applications need to call a specific version of the dynamic link library dll, if the old version of the dll overwrites the new version of the dll when installing the software, or when the application is deleted, the useful dll file is deleted by mistake, the above call may fail, resulting in a "blue screen". You can reinstall it with broken branches and give it a try.

3. Errors or corruption in the registry: In many cases, this is the main reason for the "blue screen". The registry holds important data such as the system's hardware configuration, application settings, and user profiles, and if the registry is wrong or corrupted, it is likely to have a "blue screen".

If the computer often has a "blue screen", you should first consider that there is a problem with the registry, and you should detect and fix it in time to avoid greater losses;

Fourth, the development of new technology and new hardware is very fast, if the new hardware is installed, there is often a "blue screen", it is mostly related to the motherboard's BIOS or drivers are too old, so that the hardware can not be well supported. If your motherboard supports BIOS upgrades, you should upgrade to the latest version or install the latest device drivers as soon as possible.

Evaluate your reputation, it's a matter of driver.