Dell Precision 650: Diagnostic Light Codes Before POST Light Pattern Problem Description Suggested Resolution
Diagnostic Light Codes Before POST Light Pattern Problem Description Suggested Resolution: Dell Precision 650
Table of contents
- Notes, Notices, and Cautions Abbreviations and Acronyms
- Contents
- Finding Information and Assistance 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 Dell Precision™ 650 Computer 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 1 DVI and 1 VGA connector For dual-monitor capable cards with 2 DVI connectors
- Connect the speakers
- Connect the power cables and turn on the computer and monitor
- Install additional software or devices
- To access the User’s Guide from your hard drive: To access the User’s Guide from the CD: To access your User’s Guide from the Dell Support Site:
- Setting Up Your Dell Precision 450 Computer Connect the keyboard and mouse
- Connect the modem or network cable
- Connect the monitor
- For single- and dual-monitor capable cards with a single connector
- For dual-monitor capable cards with 1 DVI and 1 VGA connector For dual-monitor capable cards with 2 DVI connectors
- Connect the speakers
- Connect the power cables and turn on the computer and monitor
- Install Additional Software or Devices
- To access the User’s Guide from your hard drive: To access the User’s Guide from the CD: To access your User’s Guide from the Dell Support Site: Caring for Your Computer
- Solving Problems Resolving Software and Hardware Incompatibilities Windows XP
- Windows 2000
- Using System Restore in Windows XP Creating a Restore Point Restoring the Computer to an Earlier Operating State
- Using Last Known Good Configuration Other Options to Help Resolve Additional Device or Software Conflicts When to Use the Dell Diagnostics
- Starting the Dell Diagnostics Starting the Dell Diagnostics From Your Hard Drive
- Starting the Dell Diagnostics From the Drivers and Utilities CD Dell Diagnostics Main Menu Option Function
- Tab Function
- System Lights Power Light Hard-Drive Cause Corrective Action Light
- Power Light Hard-Drive Cause Corrective Action Light Beep Codes Error Messages Diagnostic Lights
- Diagnostic Light Codes Before POST Light Pattern Problem Description Suggested Resolution
- Light Pattern Problem Description Suggested Resolution Diagnostic Light Codes During POST Light Pattern Problem Description Suggestion Resolution
- Light Pattern Problem Description Suggestion Resolution
- Light Pattern Problem Description Suggestion Resolution
- Light Pattern Problem Description Suggestion Resolution
- Light Pattern Problem Description Suggestion Resolution
- Frequently Asked Questions How Do I... Solution Where to Find Additional Information
- How Do I... Solution Where to Find Additional Information
- Opening the Computer Cover
- Dell Precision 650 Computer
- Inside the Dell Precision 650 Computer
- Dell Precision 450 Computer
- Inside the Dell Precision 450 Computer
Diagnostic Light Codes Before POST
Light Pattern Problem Description Suggested Resolution
No electrical power is supplied to
Connect the computer to its electrical outlet. Ensure
the computer.
that the front-panel power light is on. If the power light
is off, ensure that the computer is connected to a
A B C D
working electrical outlet, and then press the power
button.
If the problem is still not resolved, contact Dell for
technical assistance.
The computer is in a normal off
Press the power button to turn the computer on.
condition; the computer is
If the computer does not turn on, ensure that the front-
www.dell.com | support.dell.com
connected to its electrical outlet.
panel power light is on. If the power light is off, ensure
A B C D
that the computer is connected to a working electrical
outlet, and then press the power button.
If the problem is still not resolved, contact Dell for
technical assistance.
The computer is in a reduced
Use one of the appropriate methods to "wake up" the
power or "sleep" state.
computer. See "Advanced Features" in your User’s
Guide.
A B C D
If the problem is not resolved and you are trying to wake
the computer with a USB mouse or keyboard, substitute
the mouse or keyboard with a working PS/2 mouse or
keyboard and try to wake the computer.
If the problem is still not resolved, contact Dell for
technical assistance.
The BIOS is not executing. Ensure that the microprocessor is seated correctly and
restart the computer.
If the problem is still not resolved, contact Dell for
A B C D
technical assistance.
A possible power supply or power
Perform the procedure in "Power Problems" in the
cable failure has occurred.
User’s Guide.
If the problem is still not resolved, contact Dell for
A B C D
technical assistance.
= yellow
= green
= off
36 Setup and Quick Reference Guide
