Ho waeough and welcome to SF.
There are quite a few things we could try before we start wiping any hard drives
Unplug your router from power for at least 60 seconds then plug it back in, let it go through the init cycles and when all necessary lights are on, connect the computer and start it up.
see if that helps if not, post a snip of the command line after executing ipconfig /all
start>search>type cmd>type ipconfig /all
Use built in snipping tool (type snipping in search) to take a snapshot of results, and upload it to us using the attachment icon (shaped like a paperclip) in the reply forms