After you disable DHCP mode you may need to factory reset the router to re-enable DHCP mode.
2. Plug one end of ethernet cable router to the LAN port on the computer then the other end to a LAN port on the router (not the main internet port).
3. Open Network and Sharing Center > Change adapter settings (or run ncpa.cpl) Right click on the Wireless Network Connection, click the sharing tab then enable “Allow other networks users to connect through this computer’s internet connection.” Select Local Area Connection as the Home networking connection.