Flashing folder with question mark appears when trying to boot.MacBook pro not turning on
when I start to boot my MacBook Pro, a flashing folder with a question mark appears.
how do I fix this ? Will I look all my data ?
MacBook Pro 13″, macOS 10.12
A folder with a flashing question mark means that your startup disk is no longer available or doesn't contain a working Mac operating system.
Try troubleshooting steps given in this article.
Learn what to do if your Mac starts up to a question mark.
Usually data is preserved, but anything is possible.
A user is expected to keep a backup.