Hi AdityaVikas,
Please share what kind of connection are you using, wireless or wired.
Dell Inspiron 14R 5420 comes with the following Network Cards:
- 1703 WiFi + Bluetooth 4.0 Half Mini Card.
- 1704 WiFi + Bluetooth 4.0 Half Mini Card.
- WLAN 1901 WiFi + Bluetooth 4.0 Half Mini Card.
- Intel® 2230 WiFi + Bluetooth 4.0 Half Mini Card.
- Atheros 8161/8162 Ethernet Card.
You may try the following steps to update the network drivers:
- Restart your system and click on the link: http://dell.to/QjjZDA
- Enter the Service Tag of your system and select the operating system.
- You will find the wireless card and Ethernet Controller drivers under 'Networks'.
- Click on the network driver depending on the wireless or NIC card your system has.
- Click on 'Download File'.
- Select 'For Single File Download via Browser'.
- Click on 'Download Now'.
- Save the driver on your desktop.
- Once the driver is saved on desktop, right click on it and select 'Run as administrator'.
- Install the network driver by following the on screen instructions.
Also please paste a screenshot of the 'Device Manager' with the 'Network Adapters' expanded. Here are the steps to open 'Device Manager':
- Click on 'Start' and right click on 'Computer'.
- Click on 'Manage'.
- Click on 'Device Manager'.
Hope this helps. Please reply if you have any questions.