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Router stops responding with red alert light turned on

New 3Com® OfficeConnect® ADSL Wireless 108 Mbps 11g Firewall router (3CRWDR200A-75). Randomly stops responding. Download last firmware but with no help. Some setting problem? Looking for help!

red light

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Re: Router stops responding with red alert light turned...

Is the actual router not responding or the internet?

(IE - can you still log into the router but the internet won't work, or will it not even connect to the router)

Posted on Feb 28, 2008

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3COM 3CRWDR200A-75 Firmware Download - All Versions


If you want earlier firmware versions of 3Com 3CRWDR200A-75 then check this website:-

da4eeaf.jpg Firmware Router 3Com 3CRWDR200A-75 V.3.0.1
Firmware Router 3Com 3CRWDR200A-75 V.3.0
Firmware Router 3Com 3CRWDR200A-75 V.3.1 Beta
Firmware Router 3Com 3CRWDR200A-75 V.2.9b Beta
Firmware Router 3Com 3CRWDR200A-75 V.2.9 Beta
Firmware Router 3Com 3CRWDR200A-75 V.2.8b7 Beta
Firmware Router 3Com 3CRWDR200A-75 V.2.8b6 Beta
Firmware Router 3Com 3CRWDR200A-75 V.2.8b4 Beta
Firmware Router 3Com 3CRWDR200A-75 V.2.8b Beta

on Jun 29, 2008 | 3Com OfficeConnect Wireless Router

1 Answer

I forgot my admin password for Wirelles Router 3Com "Office Connect ADSL Wireless 11g Firewall Router" what i have to do ? i don't want to reset my Wireless Router couse that make's me have to reconfigure...

if you havnt changed the password to the router then it should either be "PASSWORD" "ADMIN" "ADMINASTRATOR" in the worst case senreio you may have to reset the router.

Apr 20, 2010 | 3Com OfficeConnect Wireless Router

1 Answer

3Com® OfficeConnect Cable/Dsl Wireless router not responding

Unless, you can try another computer to connect or there is a tiny (and I mean sometimes pinhole) reset button to push, it may have seen its last day. It has happenned to me and I picked up a little 35 dollar Belkin that worked great.

Jul 06, 2009 | 3Com OfficeConnect Wireless Router

1 Answer

Automatic restart of the router

try checking ur modem button or reinstall windows .if problem presists then contact me at

Apr 30, 2009 | 3Com OfficeConnect Wireless 11g Cable/DSL...

1 Answer

Ugrade 3com router 3CRWDR200A-75

The first thing I would check would be in the configuration (point your web browser to when you have a wired connection) panel, under:
Wireless settings > configuration

If the 'Wireless mode' is set to 'SuperG', this may be your problem. The SuperG setting will only work with SuperG enabled wireless adapters. First change this setting to 'Mixed 11b/11g'; if it still doesn't work switch down to '11g' then to '11b'.

Do all your wireless testing with a laptop or PC as close to the router as possible - same room at the very least.

If all other settings are correct (double check them), this is the only thing I can think of that can instantly make a difference.

If you feel the firmware may be faiilty, note that although 3.0.1 is the 'newest' on the 3com website, even in their own knowledge base they refer to newer versions. These newer versions are available at:

You could try using one of these (at your own risk), if you feel it is the firmware itself that is causing the fault.

Mar 24, 2009 | 3Com OfficeConnect Wireless Router

1 Answer

How to put wep password for 3com 3CRWDR200A-75...

all the documentation is here and the installation software if you need it is at the bottom of the page

Sep 06, 2008 | 3Com OfficeConnect Wireless Router

3 Answers

Router stops responding with red alert light turned on

I had the same problem since a bought it last week and I was going crazy. Install this firmware and everything will work fine:

Oct 20, 2007 | 3Com OfficeConnect Wireless Router

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