[NetWork] Network Adapter unable to get LAN or WAN but show available , Ipv4 is disabled


Ipv4 is disabled
It’s happened recently. One PC just suddenly lost the internet connection. The network adapter is available but unable to connect to any LAN or WAN.
And the IPv4 is uninstalled already. The first thought coming was a “Virus”.
So I did this:
GO to the network adapter Properties
Choose “Internet Protocal Version 4 (TCP/IPv4)” -> Install
Choose “Protocal”
Basically you just need to choose the option “Reliable Multicast Protocol” is enough
Or you can download the “inf” file, but now you need to choose “Have Disk”
Them Type this path “c:\windows\inf”
Choose “Internet Protocol Version 4 (TCP/IPv4)
Now the IPv4 should be installed now.
But, But, But.. it doesn’t mean you can connect to LAN or WAN
I provided some commands to help you to indentify the issues
A. If you want to uninstall the network driver and delete the registry, type two commands
wmic nicconfig get MACAddress, IPAddress, ServiceName, Caption, IPEnabled, SettingID

Get your Network NIC GUID, then go to registry HKEY_LOCAL_MACHINE\SYSTEM\ControlSet00x\Services\{GUID}to delete

wmic nic get Caption, PNPDeviceID, ServiceName, NetConnectionStatus

Get your Network NIC PCI GUID(PCI\VEN_XXXX&DEV), then go to registry HKEY_LOCAL_MACHINE\SYSTEM\ControlSet00x\Enum\PCI\VEN_{PCI_ID} to delete

because it needs “System” authorization to delete, so you can download a tool

Call “RunAsSystem”, download here

double click and type “c:\windows\regedit.exe”


B. This netsh commands, I’ve tried but not helpful
netsh interface IPV4 uninstall
netsh interface IPV4 install

Reset WinSock
netsh winsock reset catalog

Reset IPv4 stack log
netsh int ipv4 reset reset.log

netsh int ip reset reset.log

C. Type this arp command
arp -a

If there are some records not belong to your LAN DNS records, congratulation!!!


D. Use SpyBot ot some anti-virus software to detect them

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