-Modems like everything else do go nuts on you. For the most part the troubles are just with the software driver or just invalid settings. There is also a chance that another device is conflicting with the modem you have. For some reason my mouse has come into this picture before causing problems. If you are experiencing a problem with your modem such as conflicts with resources, try changing COM ports. This can fix your problem in most cases. If this doesn't help or you think that your modem is software related, reinstall the modem's driver. This can be done with the software that came with the modem.
-Change Com Ports-
At start menu click settings
Click control panel
click modem's
highlight your modem and then click properties
select a unused COM port for the modem and hit OK
-If you are having problems with dialing your internet provide check and make sure the properties are correct in your dial up networking.
At start menu
click programs
click accessories
click communications or dial up networking
-This varies from windows 95 and 98. If lost go to settings>control panel> dial up networking.
5. Double click your ISP (internet service provider) connection. Verify all information on the tabs is correct with your ISP.
This seems to be the most common problem when connecting to the internet. It usually is a IP number that is wrong or not added. You may have your login name wrong or password.
-If you are having problems with a faulty driver or just plain don't have one. You can reinstall or install one this way. There are other methods that are easier. Try using the installation disk first. If this don't work then do it manually.
At start menu click settings
Click control panel
click system
click device tab
click on your modem in the list
click for properties of the modem
click update drive or a driver tab
have installation disk ready let it search for the driver and reinstall it for you.