Does it have IR?
If so, power up, press and hold reset until the IR filter clicks (try for twice) then release.
If truly no IP being assigned or held as static it likely won't show in router (assuming router on same subnet, whatever that is)...it appears was originally on 192.168.1.XXX subnet as gateway was 192.168.1.1.
How old is this camera and what is the form factor?