It was years and years ago I used a modem and Win98, so I’m completely out of luck when trying to fix a friend’s internet connection. A friend of hers could connect from another computer so it’s not the phone line.
Error 691 is the one where it says something like “Control your password and try again”. I can remember hitting this obstacle back in the dark ages but I can’t remember how to fix it to save my life :(
It’s Invalid Username/password
So First: Make sure you typed the username/pass correctly.
There’s about 800 steps you can try to fix this if that doesn’t work (and not in this order):
- Reinstall TCP/IP
- Reinstall Dial up Networking
- Resintall Communications Folder
- Reinstall WinSock
- Delete *.PWL
- Make a new Dial up Connection
Also Google “DUN 691” - you’ll find some stuff at modemhelp.org, and a bunch of other places.