Dell Precision M6300, User Manual

Page: 156 / 292

156
Troubleshooting
T
E S T T H E E L E C T R I CA L O U T L E T
—
Ensure that the electrical outlet is working by
testing it with another device, such as a lamp.
E
L I M I N A T E P O S SI B L E I N TE R F E R E N CE
—
Turn off nearby fans, fluorescent lights, or
halogen lamps to check for interference.
R
U N T H E S P E A KE R D I A G N O S T I C S
R
E I N S TA L L T H E SO UN D D R I V E R
— See "Reinstalling Drivers and Utilities" on
page 166.
R
U N T H E
H
A R D W A R E
T
R O U B L E S H O O T E R
— See "Troubleshooting Software and
Hardware Problems" on page 169.
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 CT I O N
— Ensure that the headphone cable is
securely inserted into the headphone connector (see "Right Side View" on page 40.
A
D J U S T T H E
W
I N D O W S VO LUM E C O N T RO L
— Click or double-click the speaker icon
in the lower-right corner of your screen. Ensure that the volume is turned up and that
the sound is not muted.
Touch Pad or Mouse Problems
C
H E C K T H E T O U C H P A D S E T T I N G S
—
1 Click Start
→
Control Panel
→
Printers and Other Hardware
→
Mouse .
2 Try adjusting the settings.
C
H E C K T H E M O U S E CA BLE
— Shut down the computer. Disconnect the mouse cable,
check it for damage, and firmly reconnect the cable.
If you are using a mouse extension cable, disconnect it and connect the
mouse directly to the computer.
T
O VE R I FY T H A T T H E P RO B L E M I S W I T H T H E M O U S E
,
C H E C K T H E T O U C H P A D
—
1 Shut down the computer.
2 Disconnect the mouse.
3 Turn on the computer.
4 At the Windows desktop, use the touch pad to move the cursor around,
select an icon, and open it.
If the touch pad operates correctly, the mouse may be defective.
C
H E C K T H E SYS TE M S E T U P P RO G RA M SE T T I N G S
—
Verify that the system setup
program lists the correct device for the pointing device option. (The computer
book.book Page 156 Tuesday, August 28, 2007 10:20 AM