Dell Precision 490: Light Pattern Problem Description Suggested Resolution
Light Pattern Problem Description Suggested Resolution: Dell Precision 490
Table of contents
- Notes, Notices, and Cautions Abbreviations and Acronyms
- Contents
- Finding Information What Are You Looking For? Find It Here
- What Are You Looking For? Find It Here
- What Are You Looking For? Find It Here
- What Are You Looking For? Find It Here
- Setting Up Your Computer (Tower Orientation) Connect the keyboard and the mouse. Connect the modem or the network cable.
- Connect the monitor.
- For single- and dual-monitor capable cards with a single connector
- For dual-monitor capable cards with one DVI connector and one VGA connector For dual-monitor capable cards with two DVI connectors
- Connect the speakers. Connect the power cables and turn on the computer and monitor.
- Install additional software or devices. Setting Up Your Computer (Desktop Orientation) Connect the keyboard and the mouse.
- Connect the modem or the network cable. Connect the monitor.
- For single- and dual-monitor capable cards with a single connector
- For dual-monitor capable cards with one DVI connector and one VGA connector For dual-monitor capable cards with two DVI connectors
- Connect the speakers. Connect the power cables and turn on the computer and monitor. Install additional software or devices.
- About Your Computer Front View (Tower Orientation) 5 IEEE 1394 connector (optional)
- 13 diagnostic lights (4) Use these lights to help you troubleshoot a computer problem based on the
- Back View (Tower Orientation)
- Back Panel Connectors 4 link integrity light
- 11 serial connector Connect a serial device, such as a handheld device, to the serial port. If necessary,
- Front View (Desktop Orientation)
- Back View (Desktop Orientation)
- Inside View
- Inside View – Hard Drive Bay Rotated Out
- System Board Components
- 14 SATA connectors (SATA_4, SATA_3) Cable Colors Locating Your User’s Guide
- Removing the Computer Cover Follow the procedures in "Before You Begin" in your If you have installed a security cable, remove it from the security cable slot. Lay your computer on a flat surface with the cover facing up.
- Pull back the cover latch release. Locate the three hinge tabs on the edge of the computer. Grip the sides of the computer cover and pivot the cover up, using the hinges as leverage points. Release the cover from the hinge tabs and set it aside in a secure location.
- Caring for Your Computer Solving Problems Troubleshooting Tips Resolving Software and Hardware Incompatibilities
- Using Microsoft Windows XP System Restore Creating a Restore Point Restoring the Computer to an Earlier Operating State
- Undoing the Last System Restore Enabling System Restore Using the Last Known Good Configuration Other Options to Help Resolve Additional Device or Software Conflicts
- Dell Diagnostics When to Use the Dell Diagnostics Starting the Dell Diagnostics From Your Hard Drive
- Starting the Dell Diagnostics From the Drivers and Utilities CD Before You Start Testing Beep Codes
- Code Cause
- Error Messages Diagnostic Lights Diagnostic Light Codes Before POST Diagnostic Lights Power Problem Description Suggested Resolution Light
- Diagnostic Lights Power Problem Description Suggested Resolution Light
- Diagnostic Lights Power Problem Description Suggested Resolution Light Diagnostic Light Codes During POST Light Pattern Problem Description Suggested Resolution
- Light Pattern Problem Description Suggested Resolution
- Light Pattern Problem Description Suggested Resolution
- Frequently Asked Questions How Do I... Solution Where to Find Additional Information
- How Do I... Solution Where to Find Additional Information
- Index
- 46 Index
Light Pattern Problem Description Suggested Resolution
A possible USB failure
Reinstall all USB devices, check cable connections,
has occurred.
and then restart the computer.
No memory modules
1
Reseat the memory modules to ensure that your computer
are detected.
is successfully communicating with the memory.
2
Restart the computer.
3
If the problem still exists, remove all the memory modules
and install one memory module in memory module
connector DIMM_1.
4
Restart the computer.
A message appears stating that because your memory
is not paired, the system will operate with reduced
performance and reduced error-correction capability
5
Press <F1> to boot to the operating system.
6
Run the Dell Diagnostics. See your
User’s Guide
for more
information.
7
If the memory module passes, shut down the computer,
remove the memory module, and then repeat the process
with the remaining memory modules until a memory error
occurs during start-up or diagnostic testing.
If the first memory module tested is defective, repeat the
process with the remaining modules to ensure that the
remaining modules are not defective.
8
When the defective memory module is identified, contact
Dell for a replacement
.
No memory modules
• If you have one memory module installed, reinstall it
are detected.
and restart the computer.
• If you have two or more memory modules installed,
remove the modules, reinstall one module, and then
restart the computer). If the computer starts normally,
reinstall an additional module. Continue until you have
identified a faulty module or reinstalled all modules
without error.
• If available, install properly working memory of the same
type into your computer.
• If the problem persists, contact Dell.
System board failure
Contact Dell
for technical assistance
.
has occurred.
Quick Reference Guide 41
