This brand of computer creates folders, and things can't be put into folders for the following reasons:

1. Create a folder: click the touchpad or the right mouse button on the Apple macbookair, and then click New Folder.

2. Reason: The name in the file or folder contains illegal characters, the target folder has insufficient permissions, and the target folder is damaged, which will cause things not to be put into the Apple macbookair folder.