How to change IP Address of Default Gateway, DHCP Server & Subnet Mask in LAN Network (ADSL Modem)

How to change your LAN IPv4 Address including Default Gateway, Subnet Mask, DHCP Server and DNS Server. You can check the IP Address in Command Prompt using the command ‘ipconfig’.
Steps to do: Go to router page
Change the Main IP Address of the LAN
Also change the subnet Mask, DHCP Server Starting IP Address.
How to Change Default Gateway IP Address
How to set default gateway IP
How to change LAN IP Address
How to change Subnet Mask IP Address
How to change DHCP Server IP Address
How to change LAN Adapter IPv4 Address
How to change Router page IP Address .