Dell Precision T7400 Guide De Référence Rapide page 46

Network Problems
CAUTION:
safety instructions in the
C
H E C K T H E N E T W O R K L I G H T O N T H E F R O N T O F T H E C O M P U T E R
integrity light is off (see "Controls and Lights" in your User's Guide), no network
communication is occurring. Replace the network cable.
C
H E C K T H E N E T W O R K C A B L E C O N N E C T O R
firmly inserted into the network connector on the back of the computer and the
network jack.
R
E S T A R T T H E C O M P U T E R A N D A T T E M P T T O L O G O N T O T H E N E T W O R K A G A I N
C
H E C K Y O U R N E T W O R K S E T T I N G S
person who set up your network to verify that your network settings are correct and
that the network is functioning.
R H
U N T H E A R D W A R E
in your User's Guide.
Power Problems
CAUTION:
safety instructions in the
I
F T H E P O W E R L I G H T I S G R E E N A N D T H E C O M P U T E R I S N O T R E S P O N D I N G
"Diagnostic Lights" on page 26.
I
F T H E P O W E R L I G H T I S B L I N K I N G G R E E N
Press a key on the keyboard, move the mouse, or press the power button to resume
normal operation.
I
F T H E P O W E R L I G H T I S O F F
power.
• Reseat the power cable in the power connector on the back of the computer and the
electrical outlet.
• Bypass power strips, power extension cables, and other power protection devices to
verify that the computer turns on properly.
• Ensure that any power strips being used are plugged into an electrical outlet and are
turned on.
• Ensure that the electrical outlet is working by testing it with another device, such as
a lamp.
• Ensure that the main power cable and front panel cable are securely connected to the
system board (see "System Board Components" in your User's Guide).
46
Quick Reference Guide
Before you begin any of the procedures in this section, follow the
Product Information Guide
— Contact your network administrator or the
T
R O U B L E S H O O T E R
Before you begin any of the procedures in this section, follow the
Product Information Guide
— The computer is either turned off or is not receiving
.
— Ensure that the network cable is
— See "Restoring Your Operating System"
.
— The computer is in standby mode.
— If the link
— See