1, system resolution problem: If it is the first resolution problem, we just need to choose a higher resolution and display it in full screen. First click on the blank space of the desktop, and then right click on the screen resolution setting.

2, graphics card driver problem: the graphics card does not have a graphics card driver or there is a problem with the driver, which may also lead to the problem that the computer screen cannot be displayed in full screen. The specific operation is to install a driver or driver wizard after downloading and update the graphics card driver.

3. Monitor image scale: We only need to go to the monitor menu button to adjust the image scale, which is generally 4: 3 and 16: 9. You can debug to 16: 9.