Hi,
Check first in Device Manager if your camera is installed correctly because if it's not listed there you may need to install the driver for it. Here's the link where you can download the driver for your camera. Please use the serial number to find the most accurate driver for your laptop. http
/us.acer.com/ac/en/US/content/drivers. Once you have the driver installed do a reboot for all the changes to take effect and you should have you camera working.