|The desktop computer must be plugged into a network port on the combo router/modem that is NOT labeled WAN. There are usually 4 other network ports. |
The led for that port on the router, and for the network adapter port on the computer, must light up when the network cable is connected (when Windows is running and the power to the combo router modem is on and the latter is switched on if it has a switch) . If it doesn't try a different network cable
Note that if the router/ modem supports 10/100/1000mbps (1000 = gigabit) network cable connections, I know from experience that some category 5 network cables (for 10/100mbps connections) will NOT work properly. In some cases you may need to buy a category 6 network cable. If a network cable came with the combo router / modem, that will work fine in any case.
The plastic lever on the end connectors on the network cable should not be broken off, or fatigued - you should not be able to pull out the connector when it's plugged in unless that lever is depressed..
The outer sheath for the cable should be clamped into the end connectors, not pulled out of them.
If the ISP is not using a proxy and does NOT require you enter a password to access the internet, then no password needs to be entered for a computer connected to the router via a network cable.
If both laptops are connecting to the combo router/modem wirelessly, the password is only for the wireless security. A computer connected via a network cable does not require that .
However, some DSL or ADSL ISPs require that you register the MAC address of the wired network adapter on a web site of theirs, otherwise you can't access the internet (you can connect to the router and ping it with 127.0.0.1 but cannot connect to the internet and can't ping any internet address).
In my case, that's done automatically when I use the ISP's software installation for a standalone modem or combo router/modem.
You can have the combo router/modem router's configuration use one of
- the MAC addresses of the combo router / modem (if it's wireless, it has two - one for the wireless connection, a different one for the wired network connection - you can't change the one for the wireless internet connection)
- or have the combo router / modem clone the network adapter MAC address on ONE network adapter it is connected to via a network cable (only one can be connected that way when you do that)
- or type in the MAC address of wired network adapter that has already been registered with the ISP's web site.
Whichever one of the three you use is the MAC address seen on the internet for the router part of your combo router/modem.
(I'm allowed to register up to two MAC addresses. I type in the MAC address of one of my wire3d network adapters in the configuration of all routers or combo router / DSL or ADSL modems I use with my computers, rather than using the default MAC address of the router ).
Start- Run - type: cmd
Click on OK or press Enter.
Type: ipconfig /all
If the wired network adapter is connecting properly to the router part of the combo router / modem correctly, it's MAC address is listed as the Physical Address, and the IP address is that of the router port it's using - 192.168.xxx.xx
(xxx can be 1 to 3 numbers), and if it's connected to the internet
DHCP enabled - Yes
Autoconfiguration enabled - Yes
Subnet Mask, DHCP Server, DNS Servers are all 192.168.xxxx.xxx
where the first xxx is the same as for the router port, the last xxx for the latter three is the same (there may be one or more different addtional different address for DNS Servers .)