Why can't I run Boot Camp on my Mac?

Episode 1597 (47:56)

David from Indianapolis, IN
macOS Mojave

Caller wants to dual boot into Windows with Boot Camp, but it's telling him that he doesn't have an Intel processor, so it won't work. He bought a used Mac, what gives? Leo says it may be that Mac doesn't have the most recent version of the OS (it's running El Capitan).  Leo says to do a clean install of MACOS and do an immediately BootCamp installation. See if that works.