Hi nirajvictor_pandey,
Thank you for posting the question on Microsoft Community.
As per the description provided, it looks you are not able to recieve files on laptop using bluetooth.
I have a couple of steps that I believe should assist you with this issue.
Method 1:
Check whether the Bluetooth Support Service is started by following the below steps:
a. Press Windows symbol + R key on the leyboard simultaneously and type in
Run, services.msc, hit Enter.
b. Right click on Bluetooth Support Service and click on Start
or Restart.
Method 2:
Download and install the bluetooth driver for Windows 8 and check:
http://downloads.dell.com/FOLDER00949898M/4
For additional information, visit this link
http://en.community.dell.com/support-forums/laptop/w/laptop/4226.inspiron-5520-windows-8-64-bit.aspx
Hope this helps. If you have any more queries related to Windows feel free to post here at Microsoft Community.