Att modem has been working fine, but sudedenly internet light is red. Recommected everything and turned computer and modem on and off, but with no success. Phone line seems fine.

Contact your provider and ask them to do a
( hard )reset
Also check your cords and cables to see if they are damaged
also confirm your connections are clean and contacting
Happy repairs

CALL ATT

Hello, there could be a few things causing this problem. The router could be defective, or just died or you may not be getting enough power over your line from ATT. I would call ATT and ask them to test your line and see if everything is working properly. If it is, then you need to replace your modem/router. Any Dsl Modem and Wireless router will work.

Thanks for using FixYa!

Ok, first off, lets have the computer talk to the modem.
When you first connect to your modem, (Power, phoneline (with filter in the correct port, and Ethernet cable to computer), the accompanying disk will negotiate the setup of your account.
If you already had an account, then proceed:

Connect the RJ45 cable to the computer and the offset port in the back of the modem (RJ45 is the cable that looks like a really big telephone jack, it only goes in one way)

once that is connected, bring up your browser. (Internet explorer)
Do not expect the internet just yet, but if it does, then you modem is working and you do not have wireless with this modem.

after you bring up the browser, type this into the address bar (where you have the http:.....)
192.168.1.254 and hit enter (on your keyboard)

Assuming everything is properly connect and powered up, you should see a display of your modem's internal menu page.

The first page requires some information in order to talk to the ATT servers.

You will need you account login name

[email protected]

and your password; the one you set up your account with

save the settings, Power cycle your modem (remove the power plug and after 10 seconds plug it back in)

You should have (left to right)
Power,
Ethernet
DSL
Internet
Activity
If the 5th light blinks on the modem after the restart, you are connected.
Try to surf on your computer.
If you still do not have the 5th light (activity) you may have gotten a bad modem.

good luck and don't forget to vote!!!

I had the same problem on the Gateway 2701HG-B supplied from ATT. From searching the web, I learned these variety of modems apparently have an expiration date on the power cord at abotu 18 mos to 2 years. Mine is almost exactly at 2 yrs.

I replaced the power cord and now it works fine. You can order the OEM replacement from att e-store or try Radio Shack for a universal cord.

I had the same problem on the Gateway 2701HG-B supplied from ATT for use with their DSL service. From searching the web, I learned these variety of modems apparently have an expiration date on the power cord at about 18 mos to 2 years. Mine is almost exactly at 2 yrs.

I replaced the power cord and now it works fine. You can order the OEM replacement from att e-store or try Radio Shack for a universal cord.

Turn off everything and wait for a few minutes and turn on the modem and wait for the lights to be steady then turn on the router and lastly the PC... make sure also that the connection of the modem to the router is correct ( modem should be connected to the WAN/Internet port on the router)

If the internet light is red, it is not fine. Are you talking to AT&T support?. While on the phone with them, I had to re-add my username and password with IE and then they had to reset my connection and it worked. Give AT&T Internet support a call.

Hi, It's your power cord. You need to purchase new one. take a look on amazon, here: Finally charging for our multi device world. I hope I have helped. Cheers

Connect your pc to the ATT box. If online, check the ip address of the computer. If the ip address is 192.168.1.x, then you just have to change the router ip address. The wrt54g ip is 192.168.1.1, it may be having conflict with the ATT modem. Change the wrt54g ip to 192.168.2.1

Good Luck