Deepak Ishaan,
Open Notepad, click on format, then uncheck Word Wrap, it will make it easier to read the ipconfig log.
I see you have an Intel(R) Centrino(R) Wireless-N 2230 adapter.
Let's first try...
Go to Drivers & Downloads enter your service tag number, then select your operating system. Under Network, download and install the latest drivers.
Try these tweaks....
Start, control panel, device manager. Click on Network and then right click on your wireless adapter, left click properties, power management. Uncheck the box, allow computer to turn off this device to save power.
Disable Bluetooth on the Centrino 2230 and also set Bluetooth(R) AMP: Disabled.
Intel ~ Recommended settings for 802.11n connectivity
Go to the power options, and changed the Wireless Adapter Setting, from Maximum Power Setting to Maximum Performance.
Rick