The Service Tag on the laptop at dell.com should take you to where you can get the rest of the drivers.
Be sure to get those and MORE!!! These Dells should require the help app called QuickSet as well.
I am using a Dell Inspiron N5510. It was crashing often so I went to the local PC shop. The guy said the hard drive was gone so he put in a new one and re-installed Windows 7 Home Premium SP1 64 bit. I tried using Skype today but it said no webcam detected. Same thing with Yahoo Messenger. What should I do now?