Dell OptiPlex 330 (Late 2007) - Manual (Page 135)

Check the telephone line connection
Check the telephone jack
Connect the modem directly to the telephone wall jack
Use a different telephone line —
l Verify that the telephone line is connected to the jack on the modem (the jack has either a green label or a connector-shaped icon next to it).
l Ensure that you hear a click when you insert the telephone line connector into the modem.
l Disconnect the telephone line from the modem and connect it to a telephone, then listen for a dial tone.
l If you have other telephone devices sharing the line, such as an answering machine, fax machine, surge protector, or line splitter, bypass them and use
the telephone to connect the modem directly to the telephone wall jack. If you are using a line that is 3 meters (10 feet) or more in length, try a shorter
one.
Run the Modem diagnostic Tool —
Windows XP:
1. Click Start® All Programs® Modem Helper.
2. Follow the instructions on the screen to identify and resolve modem problems. Modem Helper is not available on certain computers.
Windows Vista:
1. Click Start ® All Programs® Modem Diagnostic Tool.
2. Follow the instructions on the screen to identify and resolve modem problems. Modem diagnostics are not available on all computers.
Verify that the modem is communicating with Windows —
Windows XP:
1. Click Start® Control Panel® Printers and Other Hardware® Phone and Modem Options® Modems.
2. Click the COM port for your modem® Properties® Diagnostics® Query Modem to verify that the modem is communicating with Windows.
If all commands receive responses, the modem is operating properly.
Windows Vista:
1. Click Start ® Control Panel® Hardware and Sound® Phone and Modem Options® Modems.
2. Click the COM port for your modem® Properties ® Diagnostics® Query Modem to verify that the modem is communicating with Windows.
If all commands receive responses, the modem is operating properly.
Ensure that you are connected to the Internet — Ensure that you have subscribed to an Internet provider. With the Outlook Express e-mail program open,
click File. If Work Offline has a checkmark next to it, click the checkmark to remove it and connect to the Internet. For help, contact your Internet service
provider.
Error Messages
If the error message is not listed, see the documentation for the operating system or the program that was running when the message appeared.
A filename cannot contain any of the following characters: \ / : * ? " < > | — Do not use these characters in filenames.
A required .DLL file was not found — The program that you are trying to open is missing an essential file. To remove and then reinstall the program:
Windows XP:
1. Click Start® Control Panel® Add or Remove Programs® Programs and Features.
2. Select the program you want to remove.
3. Click Uninstall.
4. See the program documentation for installation instructions.
Windows Vista:
1. Click Start ® Control Panel® Programs® Programs and Features.
2. Select the program you want to remove.
3. Click Uninstall.
4. See the program documentation for installation instructions.
CAUTION: Before you begin any of the procedures in this section, follow the safety instructions in the Product Information Guide.