Guide with how to test and set webcam for Yahoo Messenger
First, connect your webcam or turn it on and open yahoo messenger
Now select Messenger, then Preferences
Right now look for Video & Voice and then select Open video and voice setup to run
Click next till webcam camera detection will apear
If your webcam is working, press Finish
What to do if your notebook webcam is not working proper ?
1. First, try this software (is free)
If you have installed driver and still now working then try to install driver from windows update !
Last option, try to install universal webcam driver from here.