How to restore the black edges on both sides of the computer

Press the "Start" key, use the up, down, left and right keys of the keyboard to control and select "Settings" in the start menu, and press "Enter" to confirm

After opening it, enter "Control Panel" and then press the "Enter key"

Find "Adjust screen resolution" under "Appearance and Personalization" Rate" and press Enter

Use the "Tab key" to control, adjust the appropriate resolution, and then click "Apply"

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