Strange Internet connection Problem

Recently I saw a strange problem in a laptop, which has Vista OS. I have broadband connection. Router was showing as internet connection successful. But none of the web pages were not loaded. I checked all the internet connection settings. All are correct. I checked in Safari, Internet Explorer and Firefox.

I tried with a startup mode SafeMode with Networking . To know more about these startup modes, see my post Strange behavior with Service Pack. In SafeMode with Networking, I was able to do internet browsing. Then I realized the problem might be due to setting changes or some configuration would have changed.

Solution

1. Open a command prompt (cmd.exe) with 'Run as administrator' privilege
2. Type Ipconfig /flushdns and press ENTER key
3. Type Netsh int ip reset and press ENTER key
4. Reboot (Re-start) the system
5. Again Open a command prompt (cmd.exe) with 'Run as administrator' privilege
6. Type Netsh winsock reset and press ENTER key
7. Reboot (Re-start) the system again.

After doing above things, I were able to do net surfing. I hope that, Vista is removing the settings or resetting the configuration, if any of devices or drivers went wrong. Microsoft Knowledge-base article has different solution. That solution is You receive an error message in Internet Explorer: "Internet Explorer cannot display the webpage" .

Removing Malware
Elphantboycomputers has prepared wonderful article to Remove Malware. See the section Recap of what you will need to have on-hand before you start the cleanup process

1. To repair or reset Winsock in Vista/Win7
a. Start>Run>cmd [enter]
b. netsh winsock reset catalog [enter]
c. Reboot the system.
2. Sysclean or Multi-AV
3. Full-featured antivirus with updates downloaded separately for manual update
4. MBAM
5. SuperAntiSpyware
6. HijackThis
7. Possibly Process Explorer and Killbox.