If your monitor is buggy, temperamental, or outright broken, then no amount of adjusting your Mac’s settings is going to fix the problem! If you have access to a second external display, try attaching it to your Mac to see if it works. You should check that you’re running the most recent version of macOS. If your operating system is out of date, then you may be encountering an issue that’s already been addressed in a recent update. Check Whether Your Operating System Is Up to Date Try attaching your MacBook to a power outlet to see whether this gives your laptop the juice it needs to power an external monitor. If you’re running your MacBook from its internal battery, it may not have enough power to push pixels to an external monitor. If you’re experiencing issues with an external display, then it’s always worth detaching your cable and adapter, then re-attaching them firmly. Even a slightly loose connection can prevent your Mac from recognizing the attached display.
Just because a cable looks connected doesn’t mean that it is connected securely. Click “Restart,” then immediately close your Mac’s lid.Select the “Apple” logo in your Mac’s menu bar.Connect your Mac to the external monitor.
Some users have also reported positive results by switching their monitor on and off while also removing and reattaching the cable:įinally, if you’re using a MacBook, MacBook Air or MacBook Pro, you can try disconnecting while also closing your Mac:
Before We Begin: Are You Sure Everything’s Connected Correctly?
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