Mine does this all the time. The model is the BT 105. It drops out so often that I've extracted the drivers from the AOL installation CD and put a shortcut on the desktop. If I switch on and the taskbar comes up with red arrows for the modem, just click on the shortcut and go through the setup, overwriting the installed drivers. When the "connect the blue cable"prompt comes up, just unplug and re-plug the usb coupler and continue with the process. It eventually goes into training mode and then it's back to normal - for a while
Handily, you don't have to do a restart to complete the procedure
