I received my brother-in-law's old Mac as a gift. When we tried to switch from his email to mine, the app won't accept my password or connect online. Does anyone know to fix this? The Mac still has his name and email address as the default even though I've changed to my Apple ID and everything.
I brought the Mac to my campus tech guy, but all he could suggest was hard resetting the computer, which is something I don't want to do. If you need anymore photos for clarity, let me know and I'll be happy to edit my question with more.