If your current modem does not appear in the list of installed modems, click Add, and then select the appropriate modem. If the manufacturer and model are not correct and are not available from the list, select the Hayes-compatible option for Generic Modem driver (set to the maximum baud rate supported by your modem), and then click OK.

To verify that the modem is enabled:

To verify that the port is correct:

To determine whether the serial port I/O address and IRQ settings are correctly defined:

NOTE: Do not use a modem on COM3 if there is a serial mouse or other device on COM1. On most computers, COM1 and COM3 ports use the same IRQ and cannot be used simultaneously. The same is true of the COM2 and COM4 ports. If possible, change the COM3 and COM4 port to an IRQ setting that is not in conflict.

Also, some display adapters have an address conflict with COM4 ports. To work around this conflict, use another COM port or replace your graphics adapters.