You need to edit your Windows PC Network card property settings and ensure that the TCP/IP IPv4 properties are set to a static IP address under Obtain IP addressing. There are 2 options here, Obtain automatically or set a Static IP address, you only need the IP address I think. You can leave subnet and gateway blank or use default addresses.
If you get past all this and get FW to the router and it comes back to ready, go back in and set the network properties back to automatic on the PC when your done.