Hi Frogger. The modem disconnecting is more likely to be caused by noise on the telephone line rather than by a problem in the computer. Try disconnecting any other devices from your telephone sockets to see if that makes a difference, also make sure there is no water or anything else that could cause a problem in any of your telephone sockets. Have you ever had a modem working reliably on your telephone line? Your modem probably has a setting that will determine how long the signal can be interrupted before it disconnects, but that may not be the same for all modems. This is entered as an Extra Setting via Control panel - Modems - Properties - Connection - Advanced. But you need to know the Extra Settings for your modem.