MacBook 2010 shows question mark when starting
My MacBook 2010, if I open the device, I show the question mark, and if I open the device and I press the Firm Ware lock ?
[Re-Titled by Moderator]
iMac (2017 – 2020)
Question marked as
The folder with a question mark icon means the Mac cannot find an operating system, but you must enter the firmware password before you will be able to reinstall macOS.
Read the following: Set a firmware password on your Mac - Apple Support
Follow Steps 1 through 6.
After restarting the Mac (Step 6) then you will be able to reinstall macOS: How to reinstall macOS - Apple Support
For reference:
Learn what to do if your Mac starts up to a question mark.