If it is the first resolution problem, we just need to pick a higher resolution and display it in full screen. First, click the blank space on the desktop, and then right-click the screen resolution setting to adjust the best resolution of the most screen.

Second, the graphics card driver problem.

There is no graphics card driver or there is something wrong 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 download the computer housekeeper hardware detection and update the graphics card driver.