![i have to close and open the lid to adjust brightness mac i have to close and open the lid to adjust brightness mac](https://www.experthelp.com/Uploads/eKi4Bq0OJUGlIwUmo3yV1Q/i_QF6n80YUezxh2l_0vE5g.png)
It's important you know which user you are and your password. Hurray, you might be able to see your screen! Leave the machine for a couple of minutes. In the Touch Bar, expand the Control Strip, then tap the increase brightness button or the decrease brightness button. In Control Center, click Keyboard Brightness, then drag the slider. Step 2: Based on the user you normally login, click the right arrow and focus on your login. On the keyboard, press the increase brightness key or the decrease brightness key. This focuses you to the first user in the system We are going to follow the below steps assuming your display is still black and you are in the login process rather than the recovery process. Now think of how you normally login to the system and how many login users you normally see and which one is yours.įor example: Check the below image as example On the assumption that We still don't see anything on the monitor, leave the system for about a couple of minutes. Solution: In the left top click the Apple menu and shut down the system. Now when this happens, as a user, we would have tried to press and hold the power button and at times, it could trigger a restart taking you to the Recovery mode with three options When your system shuts down in this setting, your are probably facing the black screen issue. This stops you from viewing any warnings or notifications on the battery or power status. Scenario: When you are connected to a second display, sometimes we tend to lower the brightness of the MacBook to zero to focus on the large second display. With the addition of the touchhbar this issue is even more serious. But I hope it solves the problem for future generations. If this were an issue with the MacBook's internal display cable (as it seemed like it was), would that also prevent the external monitor from displaying anything? UPDATE: I have an external monitor hooked up to the MacBook, and when the MacBook's display fails to turn back on after waking from sleep, the external monitor also doesn't display anything – just the default "no signal" message that appears when the monitor is on but not plugged into a computer. Is there anything I can do, or is this a hardware failure? Surprised as the machine is only 3 years old (though it's my employer's, not mine!). and nothing gets the display to come back – so I've resorted to holding the power key to force it off, then booting it back up. I tried adjusting the brightness, hitting all sorts of keys, etc. It's exactly as if you lowered the brightness to 0. I know the computer itself is powered on because I can hear the fans running, and I know it's not in sleep mode because the sleep indicator light turns off when I open the lid. I close the lid at night to put it in sleep mode, and when I open it the next day, the display backlight doesn't turn on – I just get a black screen. I have a 2009 white MacBook that doesn't seem to be waking from sleep properly.