Yes, I did the re-installation of Windows Vista using the OS CD that came along with the laptop & installed the device drivers using the drivers CD. Now the Network connectivity is working  fine!  Though I backed up my data it is not required as the re-installation didn't format my disk. It copied old 'windows' folder to a folder names windows-old' and then all remaining folders we kept intact. Cheers!        
Hello,I am facing problem with my Dell Inspiron Laptop running Windows Vista Home Premium32bit.Everything was working fine, recently I cleared  a malware from windows security essentials, after that  the network connection is always showing limited connectivity, for all types of connections,  Ethernet, WiFi, USB tethering etc. There is no problem with the router. I hv verified with many working connections.I did try following:Uninstalling security essentialsDisable enable network interface.netsh Winsock reset & other commands.uninstalling network drivers.deleting regedit Winsock entries.Reinstalling drivers.Running sfc /scannonTrying windows diagnostics toolDisabling ipv6.But afer all this the issue still exists. In sfc scan logs, CBS.log it shows some error messages such as  failed to repair Winsock-core. Looks like the Winsock is corrupted. I have already tried uninstalling the drivers, deleting winscock entries from regedit and then adding them. Nothing helps. I cant find the Winsock drivers for download.Can please help me how I can fix this. Please note that no internet connectionis working with the system. Hence I need to copy any required files through external strorage memory.Many thanks  
Dell Inspiron 1525 Windows Vista - Limited Network Connectivity- nointernet