Hi,
Thank you for contacting Microsoft Community.
I understand that you are facing the issue on in-built camera.
I will certainly help you with this.
If you want to use compact camera, so you can disable the in-built camera.
I would suggest you to go through the below methods:
Method 1: Try to run the Hardware and Devices troubleshooter:
a. Press Windows key+X.
b. Click on Control Panel.
c. Click on Troubleshooting.
d. On the left pane, click on view all.
e. From the list, double click on Hardware and Devices.
f. Run the troubleshooter.
Method 2: I suggest you too try the below and check if it helps.
1. Press Windows key + X and select Device Manager.
2. In Device Manager, expand Imaging Devices and right click on the driver.
3. Click on Properties, click on Driver tab, click on Update Driver.
Method 3: Install all available Windows Updates, including Optional Updates; this might fix the issue. Refer to the following steps.
1. Press Windows key + X. Select Control Panel.
2. Click on Windows Update.
3. Click Check for Updates. After the scan is complete, click Review optional updates.
4. Click the check box next to the updates, then click Install updates.
5. If prompted, review the license agreement, then click I Accept.
6. Follow the onscreen instructions to download and install the updates.
7. If prompted, reboot your computer.
Also refer the link below:
How to customize camera options with a Windows Store device app
Camera app and webcams help
http://windows.microsoft.com/en-GB/windows-8/camera-app-faq
I hope this helps. Please let us know the results. Feel free to write us back for any further assistance with Windows, we’ll be glad to assist you.