Go to this sitehttp://www.dell.com/support/drivers/in/en/indhs1/DriversHome/NeedProductSelection
It's the Dell Support site and download
Choose *from a list of all dell products , on the right hand side
then click on "Inspiron 15 Intel (N5010)"
Search for the required drivers there.
Does this laptop of yours have a webcam in built or have you purchased it separately?