V manuálu máš popis, co zkusit v takovém případě:

ftp://downloads.netgear.com/files/WG602v4_IG_04June 07.pdf

I cannot configure the access point from a browser.
Check these items:
•
The WG602v4 is properly installed, LAN connections are OK, and it is powered on.
Check that the LAN port and Ethernet port LEDs are green , and verify that the
Ethernet cable is securely connected.
•
If you are using the NetBIOS name of the WG602v4 to connect, ensure that your PC
and the WG602v4 are on the same network segment or that there is a WINS server on
your network.
•
If your PC uses a Fixed (Static) IP address, ensure that it is using an IP Address in the
range of the WG602v4. The WG602v4 default IP Address is 192.168.0.227 and the
default Subnet Mask is 255.255.255.0.