My Acer crystal Eye webcam is not availeble moor

SOURCE: ACER CRYSTAL EYE WEBCAM

There seems to be a problem with the Crystal Eye Cam driver on the Acer Aspires when running Vista. Here are some links to the drivers:
Original Driver & The Vista Updated Driver 

SOURCE: Acer Extensa 5420-5687 Crystal Eye webcam

I had the same problem with the Extensa 5420-5687 as well, I went to the device manager and found my crystal eye webcam (there was a yellow exclaimation point on it) I tried to update the driver software by having it search automatically for the software, but it just said that it was up to date...that still didnt fix my problem. So i tried browsing my computer for the driver. I picked "let me pick from a list of drivers on my computer" I then clicked on "Acer crystal eye webcam" then i hit next, it then installed the updated driver. After that my webcam worked again!

SOURCE: how to take pictures in acer crystal eye webcam

There should be a program in the start/programs menu called acer crystaleye, the software to take pictures with the webcam is in there. (if you are running vista that came with the laptop).

SOURCE: Acer Crystal Eye Webcam JPEG error #52

This is usually cause by a file in your "My pictures" folder that is oversized and cannot be handle by the Crystal Eye software. Simply move all files (not sub folders) from your "My pictures" folder into a sub folder.

SOURCE: Acer Aspire one "The Acer Crystal Eye webcam has not found!"

Go to Device Manager and open up Universal Serial Bus controllers and you should see USB Unknown Device. Right click on the USB Unknown Device and click on Uninstall. Shut down the Aspire One PC. Unplug the power adapter to the PC. Remove the battery at the back of the PC. Wait 1 minute.

Put back the battery. Plug the power adapter. Turn ON the Acer Aspire One pc. It should automatically detect the Acer Webcam and it will be listed in the Imaging Devices at the Device Manager. :) yay