My MacBook Pro 2009 (A1278) is having an issue. When I power it up it shows a blinking folder with a question mark. I have tried most of the options that I've seen, none of them showing any signs of doing anything:
The only thing that shows any sign of progress is holding down the option key after powering up. It shows a blank screen with a mouse cursor that I can move.
Very rarely, it shows a glowing globe with a sort of hard drive underneath it, but it just fades away into the mouse cursor again within a few seconds.
I have even tried putting an external hard drive that's formatted for Mac, but my MacBook doesn't recognize it at all.
Is it a problem with the cable that is plugged into another SSD while I have an external SSD? I have no clue.
I have another MacBook with me that has helped me reformat the external hard drive for Mac use.
How do I proceed to troubleshoot this?