Hi Zavli,
The error code 19 for a device might occur if Windows cannot start this hardware device because its configuration information (in the registry) is incomplete or damaged.
What is the Make and Model of the laptop?
I would suggest you to run the hardware and device troubleshooter and check if it fixes the issue:
Method 1:
Refer to the link to know how to run the troubleshooter:
Refer to the section “Run the Hardware and Devices troubleshooter”
http://windows.microsoft.com/en-US/windows-8/what-device-isnt-installed-properly
Check if it fixes the issue. If not, proceed to the next method.
Method 2:
Download and install the latest webcam driver for the laptop for Windows 8.1 from the manufacturer's website.
For reference:
You can follow the steps mentioned under section "Code 19" to try and further troubleshoot the issue:
http://support.microsoft.com/kb/310123/en-us
http://windows.microsoft.com/en-ca/windows-8/all-drivers
Please keep posted.