I just got this macbook on eBay from a computer store and it was working completely fine until it randomly showed the question mark folder and blinked, it works sometimes but sometimes it crashes and shows the folder. Please help
MacBook Pro 15", macOS 10.14
About the screens your Mac displays as it starts up - Apple Support
Question mark—
A folder with a question mark means that the selected startup disk isn't available or doesn't contain a Mac operating system. Learn how to resolve a flashing question mark.
About the screens your Mac displays as it starts up - Apple Support
Question mark—
A folder with a question mark means that the selected startup disk isn't available or doesn't contain a Mac operating system. Learn how to resolve a flashing question mark.
Kernal Panic Report
