Issue Resolved-antivirus disabled for webcam,updated webcam drivers, uninstalled reinstalled webcam drivers, enabled webcam in bios, Reinstalled Support Assist. ​  
I bought this laptop 2 months ago and I was in love with it. Suddenly its camera has stopped working. Now it turns On / Off automatically. I've been very uncomfortable with it.   Any solution??? Thanks Erum    
Built-in Camera is not functional in Inspiron 7706 2n1