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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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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

  • Ahmed Nabawy
    Ahmed Nabawy Nov 01, 2013

    how to connect my router



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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...

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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

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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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