Flashing question mark & won't turn on
I have a 2013 Macbook Pro, and for some reason today it won't turn on. My screen froze on log in so I shut it down to restart. When it came back, it was a white screen with a flashing file icon with a question mark in it. I've tried to restart multiple times but there's nothing I can seem to do to get passed this screen. Anyone know of anything that might help? Thank you!
MacBook Pro