Solving Problems with Your Computer
Troubleshooting Techniques
Reference Guide 101
If the modem isn’t detected
• Check the modem setup. In Control Panel, open Phone and Modem Options. Check
the COM port.
• Open the hardware Device Manager: click Start, Control Panel, Performance and
Maintenance, System. If the modem is disabled, try to enable it. If it has a conflict, try
disabling another device.
• If you’re running fax software using fax Class 2, try using Class 1.
If the modem dials but you can’t hear it
• Check the speaker volume setting and mute setting.
• In Control Panel, open Phone and Modem Options. Select the modem and click
Properties, then check the volume setting on the General tab.
If the modem connects, but transferred data is bad
• In Control Panel, open Phone and Modem Options. Make sure the parity, speed, word
length, and stop bits match on sending and receiving modems.
• Try disabling error correction and data compression.
If the modem causes an ERROR message
• A string of AT commands may contain an incorrect command. If you entered
commands as extra settings for the modem in Control Panel or in your
communications software, check the commands.
If the modem doesn’t fax
• If you’re using fax Class 2 in the fax software, try using Class 1.
• Close any other communications programs.
• If you’re faxing by printing from an application, make sure you’ve selected the fax
printer.
• Try turning off power management features temporarily.
If excessive line current is detected
• Make sure you’re using an analog telephone line. You must not use a digital line. In a
hotel, ask for a data line.
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