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Error 797 "Modem Not Found" Sierra 598U

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Journeyman

Error 797 "Modem Not Found" Sierra 598U

I have a Dell 1525 Inspiron that runs on Windows Vista. One day my wireless card, Sierra 597 at the time, wouldn't connect and kept showing me error code 797, modem not found. Of course this isn't an error code in the help menu. I've spent countless hours on the phone with Technical Support, uninstalling and re-installing the software numerous times. However, they deemed the card defective and sent me a new one. I now have a Sierra 598U and now I am having the same issue. After searching numerous boards I've realized the problem is not the card at all, its in fact a Windows Vista problem. Any advice on how I can get my device to work? Is there a Vista fix that I can download somewhere? PLEASE HELP!!!

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Journeyman

I'm having the same problem but I have Windows XP.  It's so strange that I was able to install and make my Sierra 250U work on one laptop with Windows XP but not my other laptop.  'Error Code 797' is what I keep getting and, like you said, it's not in the Help book.  Someone please help!!!

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