Question mark pop up after MacBook Air 2017 Model wiped
Hi everyone I have seen this question numerous times about my question above. My son wanted to sell it so he completely wiped the computer for selling however I had the above issue pop-up. I have tried absolutely everything to fix it. I’ve YouTube it gone through the Apple steps but nothing is there anyone out there? Who could tell me how much roughly it will cost to take it into Apple to get fixed in Australia? So if anyone could give me a rough estimate that would be great, thank you.
iPhone 15 Plus