The steps are as follows:

1. First, open the computer, find the "Search" option in the computer and use the mouse to click on it.

2, and then in the pop-up interface to find "other search options" option and use the mouse click to open.

3, and then in the pop-up interface to find "pictures, music or video" option and use the mouse click to open.

4, then find the "Video" option in the interface and use the mouse to click on the checkbox, and then click on the search can be successful to quickly find out all the video files on the computer.