Hi Srini,
After the operating system is installed, the drivers should be installed in correct order. Please use this link which shows the right order: http://tinyurl.com/8xvx6xy
I suggest you to copy the drivers on a Disk or a flash drive by following the below mentioned steps from a different computer and install the drivers from the Disk/USB flash drive in Inspiron N4110 computer:
- Visit the following website in a different computer: http://dell.to/Mbe3zg
- Enter the Service tag of Inspiron N4110 in the box provided and click “Submit”.
- In the next page, click drop down arrow to select the Operating System which is installed in the computer.
- Select the right drivers accordingly from the list and click “Download File” and save the file on desktop.
- Copy all the files from the desktop into Disk/USB flash drive.
- Insert the Disk/USB flash drive in Inspiron N4110 and follow the right order in installing the drivers.
- Run the downloaded file and restart the system.
Try connecting to the internet after installing the drivers and post the results.