lycheejelly Said:
“Invalid Serial Number for MacBook Air[...]I get error messages saying that the serial number is invalid[...]”
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Compare Serial Numbers; Check Validity:
Were to Obtain the Serial Number:
Underneath the MacBook Itself:
- Find the Serial Number underneath the MacBook Air itself.
- Login
- Go To: the Apple Emblem Logo (locators on the top-left corner of the screen atop by default)
- Select” “About this Mac...”
- View: the Serial Number
Are they any Different? If so, that may be a hacked Mac (an assumption on my part).
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On Apple’s Site: Check Apple Warranty
Enter the Serial Number, and see what pops up for coverage. See if it seen as a MacBook Air.