Method one,
1.
First, download and save the picture to the designated location of the computer;
2.
Click the right mouse button in the blank space of the computer desktop and select Properties;
3.
Select the "Desktop" option in the pop-up "Display Properties" setting interface;
4.
Click "Browse" in "Desktop" option;
5.
Find and select the desktop background picture downloaded to your computer in the browse window. After selecting a picture, click Open.
6.
Finally, click OK.
Method two,
1.
Turn on the computer and find the location to download the picture;
2.
Right-click the picture you want to set as the background and select Set as Desktop Background.