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If you have configured your computer to connect to the Internet but you are still unable to do so, the problem may be due to incorrectly installed or failing hardware.  You can perform the following checks to begin troubleshooting the configuration of your modem settings.

To verify the modem configuration:

1. Click Start, point to Settings, click Control Panel,
   and then double-click Modems.
2. Verify that the manufacturer and model for your modem
   are correct. If not, run the Install New Modem wizard
   to detect the modem and confirm the current registry
   configuration.
3. If your current modem does not appear in the list of
   installed modems, click Add, and then select the
   appropriate modem.
4. 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.
5. Remove any other modem entries in the list to eliminate
   conflicts.
   

To verify that the modem is enabled:

1. Click Start, point to Settings, click Control Panel,
   double-click System, and then click Device Manager.
2. Select your modem from the list, and then click Properties.
3. Make sure the device is present, please use it, option is
   selected.

To verify that the port is correct:

1. Click Start, point to Settings, click Control Panel, and
   then double-click Modems.
2. Select your modem, and then click Properties.
3. Click General, and then verify that the listed port is
   correct. If it is not, select the correct port, and then
   click OK.

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

1. Click Start, point to Settings, click Control Panel,
   and then double-click System.
2. Click Device Manager, and then click Ports.
3. Select a specific port, and then click Properties.
4. Click Resources to display the current resource settings
   for that port. To find the correct settings, consult
   your modem documentation.
5. In the Resources dialog box, check the Conflicting
   devices list to determine whether the modem is using
   resources in conflict with other devices.
6. If the modem is in conflict with other devices, click
   Change Settings, and then click a configuration that
   does not have resource conflicts.

NOTE: Do not use a modem on COM3 if there is a serial mouse or other device on COM1. Usually, COM1 and COM3 ports use the same IRQ and cannot be used simultaneously on most computers. 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.

To check the port settings:

1. Click Start, point to Settings, click Control Panel,
   double-click Modems, click a modem, and then click
   Properties.
2. Click Connection to check the current port settings
   such as baud rate, data bits, stop bits, and parity.
3. Click Advanced to check error control and flow control.
   If you are using Windows 16-bit-based programs, turn
   off these advanced features.
4. Verify the UART type.

Data transmission problems may occur if your computer is performing other tasks during a file download. If problems or errors occur during transmission, try lowering the baud rate. Attempts to use baud rates greater than 9600 on computers equipped with 8250 or 16450 UARTs will probably result in dropped characters.

To check the modem baud rate:

1. Click Start, point to Settings, click Control Panel,
   and then double-click Modems.
2. Select the modem, and then click Properties.
3. Click General, and then set the baud rate to the
   correct speed. Slower modem speeds may work, especially
   if you're using an older computer.
4. Click Only connect at this speed if it is not
   already selected.

NOTE: If the host system you are calling cannot communicate at the initial baud rate, it may be able to communicate at a slower baud rate.

TIP: To optimize communications performance, set the baud rate to a higher speed.

To disable hardware flow control if your modem cable doesn't support it:

1. In Control Panel, double-click Modems.
2. Select the modem, and then click Properties.
3. Click Connections, and then click Advanced.
4. Make sure the Use flow control option is not selected.

   

   How to Get Help for Microsoft Products

Contact your computer's hardware manufacturer or Microsoft Systems and Hardware Technical Support at (425) 635-7040 for additional assistance troubleshooting your PC's hardware settings, or for repair or replacement.  If the problem is related to the installation and configuration of your Windows operating system or other Microsoft system components, contact Microsoft at one of the following:

Pay Per Incident		(800) 936-5700
Desktop Applications		(425) 454-2030
Systems and Hardware		(425) 635-7040
Games and Multimedia		(425) 637-9308
Windows 98		(425) 635-7222
Microsoft Internet Explorer		(425) 635-7123
Windows 95		(425) 635-7000
Office for Windows		(425) 635-7056
Microsoft Outlook®		(425) 635-7031

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