1. Check whether your graphics card is loose. Try uninstalling the graphics card driver from your computer and installing a stable version of the driver. Sometimes when entering the monitor refresh rate of the computer, it is found that there is no refresh rate to choose from. This is caused by the previous graphics card driver being incorrect or too old. Computers purchased earlier are prone to this problem.

2. Download the latest version of the driver for the corresponding graphics card from the Internet, then open the "System" properties window, click the "Device Manager" button in the "Hardware" window, and enter the system's device list interface.

3. Right-click the graphics card option in the interface, click the "Properties" command from the pop-up right-click menu, and then click "Driver" in the pop-up graphics card property settings window. , then click the "Update Driver" button, and then follow the wizard prompts to gradually update the graphics card driver to the latest version.

4. Restart the computer system. If the driver is properly installed, the display refresh rate option will appear. Then set the refresh rate to 75Hz or above to solve the problem of computer screen flickering.