John got a laptop with WIndows 8 Pro that he got for free through college. He wants to upgrade to Windows 10, but he hasn't gotten the invite. Leo says this is because he has a version that can't be upgraded to Windows 8.1. Leo recommends running the compatibility checker. If he passes that, then he can download the Windows 10 ISO and install it directly without an invitation. But he should make sure that he's compatible first. John should also run the updates until he's completely up to date.
The Chatroom says that if he can go to Windows 8.1, he'll want to do that first. Even if he doesn't upgrade to WIndows 10.