To view the Screenshot toolbar, press these three keys together: Shift, Command, and 5. You will see onscreen controls for recording the entire screen, recording a selected portion of the screen, or capturing a still image of your screen:
Connect your Apple device the way you want it. Get ethernet adapters and USB ports for seamless connection. Buy online and get free shipping. If the question mark appears only momentarily before your Mac starts up normally: Reset NVRAM. Make sure that your preferred startup disk is selected in Startup Disk preferences. If the question mark persists, follow these steps: Press and hold the power button on your Mac for up to 10 seconds, until your Mac turns off.
After you stop recording, a thumbnail of the video appears briefly in the lower-right corner of your screen.
Click Options in the onscreen controls to change these settings: