Put your laptop to any ip from this series 192.168.100.x where x can be any value between 2 to 253 (except 100 which you want to access).
Put default gateway as 192.168.100.1 and dns can be anything like Google, open dns or even if the same as the gateway ip. Subnet mask will be 255.255.255.0 which is automatically picked by Windows when you assign a static ip.