Look, sometimes the tech gods are angry. Your screen goes black, or it says “No Signal.” First, take a deep breath. Unplug the cable and plug it back in. It’s the digital version of “have you tried turning it off and on again?” It works 80% of the time.
If it’s wireless, check your Wi-Fi strength. A weak signal is like trying to whisper across a football stadium. Move your router closer, or get rid of that giant metal lamp. Also, restart your Mac and your TV. It sounds stupid, but it fixes everything.
Pro tip: You can mirror your audio too. Otherwise, you have a beautiful picture with terrible laptop speakers. Nobody wants to watch “The Godfather” through a tin can. Go to System Settings > Sound > Output and choose your TV. Now you’re a cinema king.
