Hi, Luciana71!
Thanks for reaching out to Microsoft Community and posting your concerns. We are sorry to learn about your camera not working on your Surface Book. Thanks for taking the time to let us know about this and allowing us to help you out. First, we need to know if you were able to use the Camera app on your device before and if it worked? Is this the first time you're using the Camera app or did the Camera app stop working?
For the meantime, please do the following troubleshooting steps:
· Check for Windows Update:
Go to Settings > Update & Security > Windows Update > Check for Updates
Please restart your device to apply the updates.
· Run Surface Diagnostic Toolkit and make sure to complete the tasks.
· Force shutdown the device and restart.
- Press and hold the power button until the screen turns off (about 10 seconds), then release the power button.
- Press and release the power button to turn your Surface back on. You should see the Surface logo.
If that doesn't work, use this two-button shutdown process to make sure your Surface turns off completely:
- Press and hold the power button on your Surface until the screen turns off (about 30 seconds), then release it.
- Press and hold the volume-up button and the power button at the same time until the screen turns off (about 15 seconds), then release both.
The screen may flash the Surface logo, but continue holding the buttons down for at least 15 seconds. 3. After you release the buttons, wait 10 seconds. 4. Press and release the power button to turn your Surface back on. You should see the Surface logo.
Kindly check Surface UEFI page if the Camera is enabled or disabled.
- Select Start> Settings > Update & security > Recovery.
- Under Advanced startup, select Restart Now.
- Under Choose an option, select Troubleshoot > Advanced Options > UEFI Firmware Settings, and then select Restart.
- Tap on Devices to check if the Camera devices are enabled. You may toggle them off and on. Then press Exit and hit Restart.
If this answers your question, please let our Community know by marking this post as an answer. Otherwise, don't hesitate to respond to this thread if there’s anything else that needs to be addressed.
Kind regards,
Janette_Z