Press the power button on your computer to put it to sleep, or choose Apple menu > Sleep.
#Dell e207wfp power button mac#
If you're using an external display, sleep and wake your Mac to make it check for connected displays:
Check with the display's manufacturer to make sure you're using the cable they recommend. Try using a different cable that you know is in working order.If possible, check to see if using a different display or a different adapter works. If your display has more than one video connection, see if using another connection on the display works.For example, a mini DisplayPort to DVI adapter can't be connected to a DVI to HDMI adapter. Some video adapters can't be connected together. If you're using more than one video adapter to connect your display (the adapters are "chained" together), try connecting the display using only one adapter if possible.If you're using a video adapter, unplug the video adapter from your Mac, then plug it back in to reseat the connection.Disconnect the video cable where it plugs into your Mac, then plug it back in to reseat the connection.If you're using a display hub, switchbox, or "KVM," try connecting your display's video cable directly to your Mac instead.
#Dell e207wfp power button pro#
If you're using a Mac Pro (Late 2013) make sure your displays are connected to the right ports.Make sure the external display's power cable is securely connected and that your display is turned on.If you're using an Apple notebook, try connecting its power adapter.If you see similar issues in only one window or app, check with the app's developer for updates or more help.Ĭheck the connections to your Mac and external displays: These steps likely won't help if the issue is only happening in one app. These steps can also help if the image on your screen repeatedly turns on and off (flickers), if horizontal lines appear (snow), or if the image is distorted (torn or scrambled). Try these steps if you don't see an image on your display. If the display image is blank or unusable Have a look at the information below for some helpful troubleshooting steps. I understand you're having some trouble waking your external display on your Mac, and I have some information that may help. Thanks for reaching out to the Apple Support Communities.