Dell precision t7400 Quick Reference Manual page 29

Light Pattern Problem Description
A possible
expansion card
failure has occurred.
Another failure
has occurred.
Suggested Resolution
Determine if a conflict exists by
1
removing an expansion card (not
a graphics card) and restarting the
computer (see "Cards" in your
User's Guide).
If the problem persists, reinstall the
2
card you removed, and then remove
a different card and restart
the computer.
Repeat this process for each expansion
3
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).
If the problem persists, contact Dell
4
(see "Contacting Dell" in your
User's Guide).
• Ensure that all hard drive and 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