Dell Precision T7400 (Late 2007): Light Pattern Problem Description Suggested Resolution
Light Pattern Problem Description Suggested Resolution: Dell Precision T7400 (Late 2007)
Table of contents
- Notes, Notices, and Cautions
- 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
- What Are You Looking For? Find It Here Setting Up Your Computer Changing Between Tower and Desktop Orientations Switching From Tower to Desktop Orientation
- Switching From Desktop to Tower Orientation Installing Your Computer in an Enclosure
- • Leave 10.2 cm (4 in) minimum clearance on all vented sides of the computer to permit the airflow required for proper ventilation.
- • Do not install your computer in an enclosure that does not allow airflow.
- Transferring Information to a New Computer Microsoft Windows XP
- Files and Settings Transfer Wizard (With the Operating System Disc) PREPARE THE DESTINATION COMPUTER FOR THE FILE TRANSFER — COPY DATA FROM THE SOURCE COMPUTER —
- TRANSFER DATA TO THE DESTINATION COMPUTER — Files and Settings Transfer Wizard (Without the Operating System Disc) CREATE A WIZARD DISK — COPY DATA FROM THE SOURCE COMPUTER —
- TRANSFER DATA TO THE DESTINATION COMPUTER — Microsoft Windows Vista Power Protection Devices
- Surge Protectors Line Conditioners Uninterruptible Power Supplies
- About Your Computer Front View (Tower Orientation) 1–3 5.25-inch drive bays
- 13 network link light The network link light is on when a good connection exists
- Back View (Tower Orientation)
- Back Panel Connectors 6 link integrity light Green — A good connection exists between a 10-Mbps
- 11 serial connectors (2)
- Cleaning Your Computer Computer, Keyboard, and Monitor Mouse (Non-Optical)
- Floppy Drive CDs and DVDs Troubleshooting Tools Power Lights
- • Eliminate interference. Some possible causes of interference are:
- Diagnostic Lights Diagnostic Light Codes During POST Light Pattern Problem Description Suggested Resolution
- Light Pattern Problem Description Suggested Resolution
- Light Pattern Problem Description Suggested Resolution
- Light Pattern Problem Description Suggested Resolution
- Beep Codes Code Cause Code Description Suggested Remedy
- Code Description Suggested Remedy System Messages
- Hardware Troubleshooter
- 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 Disc
- Dell Diagnostics Main Menu Option Function
- Tab Function Troubleshooting
- Battery Problems Drive Problems
- Optical Drive Problems Hard Drive Problems
- E-Mail, Modem, and Internet Problems HECK THE MICROSOFT OUTLOOK EXPRESS SECURITY SETTINGS — If you cannot RUN THE MODEM DIAGNOSTIC TOOL —
- VERIFY THAT THE MODEM IS COMMUNICATING WITH WINDOWS — Error Messages
- IEEE 1394 Device Problems
- Keyboard Problems Lockups and Software Problems The computer does not start up The computer stops responding A program stops responding
- A program crashes repeatedly A program is designed for an earlier Windows operating system A solid blue screen appears Other software problems
- Memory Problems F YOU RECEIVE AN INSUFFICIENT MEMORY MESSAGE — IF YOU EXPERIENCE OTHER MEMORY PROBLEMS — Mouse Problems C HECK THE MOUSE CABLE —
- RESTART THE COMPUTER — HECK THE MOUSE SETTINGS — Network Problems
- Power Problems
- Printer Problems Scanner Problems
- Sound and Speaker Problems
- No sound from headphones Video and Monitor Problems The screen is blank
- The screen is difficult to read
- 3D image quality is poor Only part of the screen is readable
Light Pattern Problem Description Suggested Resolution
A possible
1
Determine if a conflict exists by removing
expansion card
an expansion card (not a graphics
failure has occurred.
card) and restarting the computer
(see "Cards"
in your User’s Guide
).
2
If the problem persists, reinstall the card
you removed, and then remove
a different card and restart the computer.
3
Repeat this process for each expansion
card installed. If the computer starts
normally, troubleshoot the last card
removed from the computer for resource
conflicts (see "Restoring Your Operating
System"
in your User’s Guide
).
4
If the problem persists, contact Dell
(see
"Contacting Dell" in your
User’s Guide
).
Another failure
• Ensure that all hard drive and
has occurred.
CD/DVD drive cables are properly
connected to the system board
(see "System Board Components"
in
your User’s Guide
).
• If there is an error message on the
screen identifying a problem with
a device (such as the floppy drive or
hard drive), check the device to make
sure it is functioning properly.
• If the operating system is attempting to
boot from a device (such as the floppy
drive or CD/DVD drive), check the
system setup program (see "System
Setup"
in your User’s Guide
) to ensure
the boot sequence is correct for the
devices installed on your computer.
• If the problem persists, contact Dell
(see
"Contacting Dell" in your
User’s Guide
).
Quick Reference Guide 29
