Dell Dimension XPS 50 Reference Guide - Page 97

Modem, Incorrect Plug and Play configuration

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In general, modem malfunctions may be caused by any of the following problems: Incorrectly installed modem Interrupt request (IRQ) conflicts Incorrect information (.inf) files Multiple drivers installed Incorrect Plug and Play configuration To troubleshoot a modem card, perform the following steps: 1. Check for modem IRQ conflicts. Refer to "Resolving Software and Hardware Incompatibilities" in Chapter 5. Resolve any modem IRQ conflicts, and restart the computer system. 2. Verify the modem configuration. a. Click the Start button, point to Settings, and click Control Panel. b. In the Control Panel, double-click Modems. If there are multiple entries for the same modem, remove those entries and restart the computer. If there are modems listed that are not part of the system configuration, remove them from the list. If you are using Windows NT, check the modem properties and then proceed to step 3. If you are using Windows 2000, double-click Phone and Modem Options in the Control Panel. c. Click the Diagnostics tab. d. Highlight the COM port that the modem is using. e. Click More Info to verify that the system can communicate with the modem. If the modem reports information to the system, the modem is operating properly. 3. Remove the computer cover and support beam as described in "Removing and Replacing the Computer Cover and Support Beam" in Chapter 2. 4. Remove and reinstall the modem, fully seating the card in its connector (see Figure 6-1). 5. Replace the computer cover and support beam, connect all external cables, and turn on the system. Enter the system setup program as described in Appendix B, "System Setup Program," and verify that Serial port A on the Peripheral Configuration submenu is set to Auto. NOTE: If you have persistent problems with low connection speeds, contact your telephone company to check for data noise and imbalanced lines or your Internet service provider (ISP) for information about their service. support.dell.com Checking Inside Your Computer 6-3

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support.dell.com
Checking Inside Your Computer
6-3
0¼½·Ê
In general, modem malfunctions may be caused by any of the following problems:
±
Incorrectly installed modem
±
Interrupt request (IRQ) conflicts
±
Incorrect information (
.inf
) files
±
Multiple drivers installed
±
Incorrect Plug and Play configuration
To troubleshoot a modem card, perform the following steps:
1.
Check for modem IRQ conflicts.
Refer to
“
Resolving Software and Hardware Incompatibilities
”
in Chapter 5.
Resolve any modem IRQ conflicts, and restart the computer system.
2.
Verify the modem configuration.
a.
Click the
Start
button, point to
Settings
, and click
Control
Panel
.
b.
In the
Control
Panel
, double-click
Modems
. If there are multiple entries for
the same modem, remove those entries and restart the computer. If there
are modems listed that are not part of the system configuration, remove
them from the list. If you are using Windows NT, check the modem proper-
ties and then proceed to step 3. If you are using Windows 2000, double-click
Phone and Modem Options
in the
Control Panel
.
c.
Click the
Diagnostics
tab.
d.
Highlight the COM port that the modem is using.
e.
Click
More
Info
to verify that the system can communicate with the modem.
If the modem reports information to the system, the modem is operating
properly.
3.
Remove the computer cover and support beam as described in
“
Removing and
Replacing the Computer Cover and Support Beam
”
in Chapter 2.
4.
Remove and reinstall the modem, fully seating the card in its connector (see
Figure 6-1).
5.
Replace the computer cover and support beam, connect all external cables, and
turn on the system. Enter the system setup program as described in Appendix B,
“
System Setup Program,
”
and verify that
Serial port A
on the
Peripheral
Configu-
ration
submenu is set to
Auto
.
NOTE: If you have persistent problems with low connection speeds, contact your
telephone company to check for data noise and imbalanced lines or your Internet ser-
vice provider (ISP) for information about their service.