No internet when router plugged in

This might actually has nothing to do with the router itself, you may need to call your ISP (Internet Service Provider) and let them know you have a new router. They may have to configure it themselves because some modems are not plug-and-play (which means when you get a new router, the modem doesn't automatically recognize the new router.) So, your best bet right now is to call your ISP and they will walk you through it. I faced a similar issue and finally got through by simply calling my ISP, calling the router's manufacturer may do nothing, at least it didn't for me.
Try this: Unplug all internet cords, unplug all power cords. Wait about 30 seconds to 2 minutes. Connect your router to the modem with one internet line, into to the appropriate ports. Next, plug your modem into the power source, and let it run for approximately 4 minutes (or until all of the lights are on and it is ONLINE.) It varies per modem on when it is 100% online. Next, plug your router into the power source, and wait until it loads 100%. Then try plugging into one of your computers, not all, one, and preferably using Windows Operating systems because they detect internet more easily than Mac.
If all else fails, one more troubleshooting to do, and that is to plug your computer DIRECTLY from the modem to the computer via internet cord, bypassing the router. If you get internet from the modem, then it is supposed to work, the router could be the issue. If you are NOT getting the internet, then the modem is the issue.
Lastly, I really think calling your ISP would solve the issue all together. GOOD LUCK!

There's a lot of layers to what can go wrong, generally speaking you should be able to get online if two conditions are met: You are connected to your wireless network, and your modem is assigning an IP address to your router.

Once you know you are connected to your wireless network (you should be able to see the correct network name when you put your mouse over the computer icon in the lower right - assuming you are using Windows), you can generally fix most situations where the modem is not assigning the router an IP address by resetting the devices in the proper order, here's how:

1. Unplug the power cord from both the modem and the router
2. Wait 1 full minute
3. Plug the power back in on the modem
4. Wait for the Cable light to go solid
5. Plug the power back in on the router

This will solve the vast majority of issues. If it does not, double check to make sure the ethernet cord from the modem is going into the proper plug on the router. Usually this is going to be labeled "Internet", "Modem", or "WAN", in stead of a number.

If even this does not resolve the issue, feel free to give your ISP a call. While this may be a problem with the router, most ISP employees are at least willing to do minor preliminary troubleshooting, and will often have access to advanced tools to help them see what the modem can see.

It's sounds like you're getting your cords mixed up. The modem (the box from your company that provides internet) needs it's power cord plugged in, a phone cord or a cable cord plugged in, and an ethernet (LAN) cord plugged into it. The power cord will plug into the wall obviously, the phone cord or cable cord will be coming out of the wall obviously, but the Ethernet (LAN) cord will plug into your computer or a router. A router in your case. So the Ethernet cord from your modem (box that came from you company that provides internet) will plug into the router in the specific slot that says Internet or Modem connection. Now you need another Ethernet cord to go from your router to your computer. Try to plug the cord that goes from the router to the computer into the 4 different ports on the router until one of them works, you'll have to give it about a min to check each one. If that doesn't fix it then you need to make sure your LAN card is being read correctly and installed correctly, best way to do this is to go to Start > Control Panel > Device Manager and look at Network Adapters. If there is a Red X next to a conenction, right+click the conenction and tell it to enable, or update drivers.

1)If internet light not on then login to router and check the summary!!!and try to diagnose the test which is there in router!! and check for ppp is it active or down? Might be authentication credential is not correct that could be the reason?

If you have a wireless router and modem unplug both of them leave unplugged for about 5 minutes plug in modem first after its all the way booted up plug in the router that should work and also make sure all cords to modem and router are plugged in good.If you don't have a router just unplug the modem for 5 minutes and plug it back in and let it boot all the way up then see if you can get on.

Make sure that you have the ethernet cord from your modem plugged into the WAN/Internet port on your router. Then unplug the power cord from your cable modem and plug it right back in. After the modem fully comes back online, unplug the power cord on the wireless router and plug it back in. wait 30 - 60 sec and then try and connect.

Most cable companies only allow one active"CPE" at a time for internet access. All this means is when you change what is connected to the cable modem you must always reboot the cable modem to allow access.


Hope this helps. Let me know if it does not work.

Please rate.

are you sure your hooking the comcast modem in the right place?

Make sure that you have the ethernet cord from your modem plugged into the WAN/Internet port on your router. Then unplug the power cord from your cable modem and plug it right back in. After the modem fully comes back online, unplug the power cord on the wireless router and plug it back in. wait 30 - 60 sec and then try and connect.

Most cable companies only allow one active"CPE" at a time for internet access. All this means is when you change what is connected to the cable modem you must always reboot the cable modem to allow access.


Hope this helps. Let me know if it does not work.

Please Rate

Ok in this case the problem is more than likely a generic one for all modems. All modems like to bind themselves to whatever device you have initially plugged in when you plug in the power cable for the modem. My guess is you had the pc hooked up directly to the modem and then plugged in the poewr cable to the modem.

To fix this you need to unplug the router and modem cables for 2 minutes. Plug in the modem with it being hooked up to nothing but the wall [Power Cable and Internet Cords hooked up only; no pc yet]

Your router is probably not need to be bridged so there should be a small hole somewhere on the router normally on the back or bottom saying reset. Press and hold that button with the router only plugged into the power no internet or pc [Although it doesnt matter if the pc is hooked up to the router] for at least 10 seconds. This will cause the router to reset to the factory default settings undoing the bridge. After this time the modem should say it has internet and whatever else except a activity light and similar things.

What you want to do now is unplug the router from the power and hook up the modem to the router and then plug the power cable back into the router.

After all this you should be able to go into the pc and access the router and set up the settings you like or need for the router if you want. Otherwise you should have internet again.

-that is stating that there is an issue between the gateway AKA your router and the internet.

-try restarting computer first, if that fails to give you an actively working connection. if that fails try the following and that should clear up any issues you may have unless the internet is down for whatever reason, unpayed bill etc...

-so if there is a modem and a router unplug all devices from each other and unplug the router and modems power cords. restart computer. after windows boots up plug in ethernet cords back appropriately (telephone looking cables) to each other. plug the power cord to modem first then the router's power cord and your internet should be restored.