What macOS version stopped working? Have you tried to boot into safe mode by holding shift down when turning on your MacBook? Have you reset NVRAM?
Here’s how to reset the NVRAM on your Intel-powered Mac:
- Hold down all of these keys: Command, Option (Alt), P and R, and turn on the Mac (it’s the same keys to reset the PRAM).
- Keep holding the keys down until you hear the Mac restart again.
- Listen for a second reboot, and then release the keys.
Have you reset System Management Controller or SMC? Here’s what to do if you want to reset the SMC (Intel Macs):
- Shut down the MacBook.
- Unplug and then reconnect the power cable.
- Press Shift + Ctrl + Option/Alt keys and the power button at the same time.
- Now release all those keys and the power button at the same time.
- You may see the light on the power cable flicker.
- Restart your MacBook.
From there move onto trying to repair the boot drive with disk utility which should be present in the recovery partition. You access this with Command-R.
Now you are in Recovery mode here’s what to do:
- Once your Mac starts in Recovery Mode you will gain access to Utilities. Click on the Disk Utility option.
- Locate your Mac’s drive – probably Macintosh HD, select it.
- Click First Aid.
- If there are errors with your disk, Disk Utility should find them and will either repair them automatically, or will ask if you would like to repair them. Click Repair Disk if this is the case.
In Recovery Mode you can also do the following:
Did you back up your MacBook with Time Machine by chance? A lot of questions but all impact potentially how you proceed.
I assume your MacBook is white? Is this correct? This would be a A1342 model. For this Mid 2010 MacBook, there are two usb2 ports to the right of the display port. This is where you would insert a flash drive with an os on it. If the above work flow was not successful.
From here, if none of the above has worked, you may be looking at a reinstallation of MacOS, failed drive replacement or both. Good luck!