|"when adding router to my computer"|
Exactly what do you mean by this? A router is typically added to a network to provide DHCP and NAT between a number of client devices in a LAN, and as interface between the LAN and WAN. One doesn't "add a router to a computer" instead one "adds a router to a network"
Now. Describe your network. What type of internet/modem. What brand/model router?
Goin' Fishin' (Some day)