I've been given an old (circa 2008) but working MBP & I simply put in a new hard drive, increased the RAM & installed the latest OS that it would take (El Capitan 10.11.6) and I thought all was fine initially, until I realised that the Serial Number in the "About This Mac" is totally different from what is on the base of the laptop!
Where would the operating system get this serial number from, as this is also strangely invalid when I try it at everymac.com, but the one on the laptop base is working & seems appropriate for this machine.
It may or may not be relevant to this query, but it also won't let me login to iMessage or Facetime with my 100% working Apple ID.
Where would the operating system get this serial number from, as this is also strangely invalid when I try it at everymac.com, but the one on the laptop base is working & seems appropriate for this machine.
It may or may not be relevant to this query, but it also won't let me login to iMessage or Facetime with my 100% working Apple ID.