I assume you are trying to configure the router using a "wired" connection between the PC's network adapter and the router?
That being the case, as the router is not at the moment allocating an IP address to the network adapter, you need to enter it manually. Open the Network Connections folder, right click Local Area Connection 2 (do you have two network adapters installed?), select Properties, highlight "Internet Protocol (TCP/IP)" and click the Properties button. In the box that opens, click "Use the following IP address" and enter:
IP address - 192.168.1.2
Subnet Mask - 255.255.255.0
Default Gateway - 192.168.1.1 (the router's IP address)
See if that lets you access the router's Setup pages.