No Sound From Headphones; Video And Monitor Problems; The Screen Is Blank - Dell Precision T5400 Quick Reference Manual

T
E S T T H E E L E C T R I C A L O U T L E T
testing it with another device, such as a lamp.
E
L I M I N A T E P O S S I B L E I N T E R F E R E N C E
or halogen lamps to check for interference.
R
U N T H E S P E A K E R D I A G N O S T I C S
R
E I N S T A L L T H E S O U N D D R I V E R
R H
U N T H E A R D W A R E
in your User's Guide.

No sound from headphones

C
H E C K T H E H E A D P H O N E C A B L E C O N N E C T I O N
securely inserted into the headphone connector (see "About Your Computer" in your
User's Guide).
A W
D J U S T T H E I N D O W S V O L U M E C O N T R O L
in the lower-right corner of your screen. Ensure that the volume is turned up and that
the sound is not muted.

Video and Monitor Problems

CAUTION:
safety instructions in the
NOTICE:
If your computer came with a PCI Express graphics card installed, removal of
the card is not necessary when installing additional graphics cards; however, the card
is required for troubleshooting purposes. If you remove the card, store it in a safe and
secure location. For information about your graphics card, go to support.dell.com.

The screen is blank

NOTE:
For troubleshooting procedures, see the monitor's documentation.
C
H E C K T H E M O N I T O R C A B L E C O N N E C T I O N
• Ensure that the monitor cable is connected to the correct graphics card (for dual
graphics card configurations).
• If you are using a DVI-to-VGA adapter, ensure that the adapter is correctly attached to
the graphics card and monitor.
• Ensure that the monitor cable is connected as shown on the setup diagram for your
computer.
• Remove any video extension cables and connect the monitor directly to the computer.
52
Quick Reference Guide
— Ensure that the electrical outlet is working by
— See "Drivers" in your User's Guide.
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
— Turn off nearby fans, fluorescent lights,
— See "Restoring Your Operating System"
— Ensure that the headphone cable is
— Click or double-click the speaker icon
—
.