What if the computer screen is serrated?

This may be caused by the incorrect resolution setting, please reset it. If it is not the resolution or the resolution cannot be set, it may be that the graphics card driver is damaged or an inappropriate driver is installed. Please install the appropriate graphics driver or repair the system. Please look at the following methods.

1. Press F8 when starting the machine until advanced options appear. Select "Last Correct Configuration" and press Enter to repair (this method can restore the original driver).

2. If the fault is caused by updating the driver, please right-click My Computer and select Properties, and then select Device Manager to find the driver. Right-click Properties/Driver Options/above to return to the driver options below, and then press OK.

3. If the fault still exists, it is recommended to reinstall the operating system.