Mac starts up with a question mark
how do I fix my Mac when a file box with a question mark is flashing on the screen
MacBook Pro 13″, macOS 10.15
This usually means that there is no software the home folder can locate, or that your hard drive has died. If your HD has died, there is yes way to recover your data unless you have a time machine backup.
More info here: https://support.apple.com/en-us/HT204323
