José Adorno/BGR Modern computers are so power efficient and effective at handling tasks in the background that there’s no need to shut down your MacBook when you stop using it. This is not just a tip for MacBook users, but also for Windows laptop owners. While it’s been more than a decade since I last used a Windows laptop, I was surprised to discover from long-time Windows users that the same applies to these computers. If you’re away from your MacBook for a few hours or even...