The phenomenon of screen flickering on a computer display screen during startup may be caused by various factors. Here are some common reasons and corresponding solutions: 1. Driver issues
Drivers are the bridge between computer hardware and operating systems. If there are problems with graphics card drivers, such as outdated, damaged, or incompatible with the operating system, it may lead to screen flickering. The solutions include:
Update graphics card drivers: Download and install the latest drivers through the device manager or the official website of the graphics card manufacturer.
Uninstall and Reinstall Drivers: Uninstall the graphics card driver in Device Manager, check "Delete driver software for this device", then restart the computer and download and install the latest driver from the graphics card manufacturer's official website. 2、 Hardware connection issues
Poor hardware connections may also cause screen distortion, such as loose video cables, interface dust, etc. The solutions include:
Check the video cable: Ensure that the video cable (such as HDMI, VGA, DVI, or DisplayPort) is tightly connected and not loose or damaged. You can try replacing the video cable to troubleshoot the cable issue.
Check the interface: Ensure that the interfaces on the computer and monitor are not damaged or dusty. 3、 Graphics card issue
Graphics card failure is a common cause of screen flickering, including overheating, damage, or BIOS defects. The solutions include:
Check the temperature of the graphics card: If the graphics card overheats, you can try opening the chassis, cleaning the dust, and adding a cooling fan or radiator.
Re plug and unplug the graphics card: Turn off the computer and disconnect the power, open the chassis, unplug the graphics card and reinsert it to ensure it is installed correctly.
Replace graphics card: If the graphics card is damaged, it may be necessary to purchase a new graphics card and install it. 4、 Display issue
Malfunctions of the monitor itself or damage to the cables connected to the host may also cause screen distortion. The solutions include:
Test monitor: Connect the monitor to another computer or use another monitor to connect to the current computer to determine if it is caused by a monitor issue. 5、 Memory issue
Poor or faulty memory module connections may also affect image processing, leading to screen distortion. The solutions include:
Check the memory module: Remove and reinsert the memory module to ensure good contact. If there are multiple pieces of memory, they can be tested one by one. 6、 Power supply issue
Insufficient power supply may also cause the graphics card to not receive enough power, leading to screen flickering. The solutions include:
Check the power supply: Ensure that the power supply is working properly and has sufficient power. If the power supply is old or damaged, consider replacing it. 7、 Software issues
Sometimes software issues can also cause monitor screen distortion, such as conflicts with graphics cards or motherboards due to newly added hardware, or issues caused by recently installed software or updates. The solutions include:
Enter safe mode: Press the F8 key (or Shift+F8) when booting up, select safe mode to start, and then uninstall recently installed software or updates.
System restore: Use the system restore function to restore the system to a point in time where there were no screen burn-in issues. 8、 BIOS setup issues
Enter BIOS during startup, check graphics card settings and display settings to ensure there are no improper configurations.
There may be various reasons for computer screen flickering during startup, and it is necessary to investigate and take corresponding solutions one by one. If none of the above methods can solve the problem, it is recommended to seek the help of professional technicians.