I believe you need an Apple ID that owns the OSX you're wanting to install. Do you have access to another mac?
- If yes, go here
- Sign into your Apple ID
- Search for "High Sierra"
- Click "download" or whatever it says under it.
After that, your Apple ID owns the OSX, so you should be able to log in this time and reinstall the operating system.
epr: Cool guys thanks for that, I may have access to an apple laptop or pc in the near future just wanting to check the laptop my sister has is about 7 years old do I have to log in and get access to a certain version of the software and is there any gotchas for the machine I use to log in to I need to avoid. Once again thank you for the help.
There are many similar articles on the web about how to recover a MAC, but in my experience they are robust and very flexible, UNLESS the disk has failed and you have to start from scratch.
Re logging in, Apple started pushing all it's customers to 'using' icloud across all platforms, mac included. You could convert local login on the machine to an icloud login, which can help with recovery. Again, IF it had been setup. Win10 has gone this way to.
Good luck, you'll probably find the boot partition has been deselected by accident.
antoniosk: Good luck, you'll probably find the boot partition has been deselected by accident.
I think you get a "?" icon in that case; a "not allowed" sign would indicate that it's found a bootable partition but that it's failed to boot.
As mentioned above, Internet Recovery might do the trick. Unlike the "on-disk" recovery, Internet Recovery does not require an Apple ID (unless you're on a system more than about six years old). Reboot and hold Command-Option-R at the chime, and you should get a message saying "Starting Internet Recovery".