Hi Prince,

If your Internet gets disconnected sometimes, most likely you have the Automatically detect settings option selected in -> Internet Options -> connections.
It goes out and tries to decide on its own the best way to get you to the internet. It can get hung up for a while trying to find a proxy to talk to. Removing this option will cause it to speed up.

Another thing is that if your computer is set to dial a connection it could also hang up like this while it is deciding what to do. Setting your connections to "I am on a local area network" can fix this issue too.

Also, If the problem recurs when you try to go to google.com, instead try going to http://74.125.45.100... which is one of many IP addresses for google. This will bypass the DNS lookup. If the page loads quickly, then you have to look into DNS.
To do so, follow the below steps:
1. Go to command prompt .
2. Type ipconfig /flushdns (do this multiple times) then type
ipconfig /registerdns



4. You should also try to reset the TCP/IP stack. To do this follow the below steps:

1. Click the Start button
2. In the search box, type "Command Prompt"
3. Right-click Command Prompt
4. Click Run as administrator
5. Type "netsh winsock reset catalog" and hit Enter
6. Type "netsh int ip reset reset.log" and hit Enter
7. Restart your computer

I hope this helps in solving your Internet connection problem.

Regards,
Lokesh