电脑如何换壁纸

To change the wallpaper on a computer, you can typically follow these steps:

1. Right-click on the desktop.
2. Select "Personalize" or "Properties" from the dropdown menu.
3. Look for the "Background" or "Wallpaper" option.
4. Choose a new wallpaper image from the available options or browse your computer for a custom image.
5. Select the desired wallpaper and apply the changes.

If you need specific instructions for a particular operating system or device, please provide more details.