"mac stuck on folder blinking: my mac just randomly started to randomly not turn on, i powered it on and it started flashing a folder with a question mark. it says the disk is fine, but when i try to reinstall macOS X maverick it says there’s no disk found. help me please. i use my computer for college!!"
-------
Thank you for the photo.
Getting the Hard Drive to be Found:
Mount the Drive:
Boot into Recovery Mode. (Silicon Chip or Intel Clip): Then, using Disk Utility, see if the Hard Drive is seen. If it is, then see if you need to click the “Mount’ button for it. Try rebooting once more. If of no success, then click unmount button, and then the mount button. Try rebooting once more.