Dell Precision M6300 (Late 2007) - Manual (Page 131)

Troubleshooting
131
A DJUST THE W INDOWS VOLUME CONTROL — 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.
D ISCONNECT HEADPHONES FROM THE HEADPHONE CONNECTOR — Sound from the
speakers is automatically disabled when headphones are connected to the computer’s
front-panel headphone connector.
T EST THE ELECTRICAL OUTLET — Ensure that the electrical outlet is working by
testing it with another device, such as a lamp.
E LIMINATE POSSIBLE INTERFERENCE — Turn off nearby fans, fluorescent lights, or
halogen lamps to check for interference.
R UN THE SPEAKER DIAGNOSTICS
R EINSTALL THE SOUND DRIVER — See "Reinstalling Drivers and Utilities" on
page 142.
R UN THE H ARDWARE T ROUBLESHOOTER — See "Troubleshooting Software and
Hardware Problems" on page 145.
No sound from headphones
C HECK THE HEADPHONE CABLE CONNECTION — Ensure that the headphone cable is
securely inserted into the headphone connector (see "Right Side View" on page 30.
A DJUST THE W INDOWS VOLUME CONTROL — 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 HECK THE TOUCH PAD SETTINGS —
1 Click Start→ Control Panel→ Printers and Other Hardware→ Mouse.
2 Try adjusting the settings.
C HECK THE MOUSE CABLE — 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 VERIFY THAT THE PROBLEM IS WITH THE MOUSE , CHECK THE TOUCH PAD —
1 Shut down the computer.
2 Disconnect the mouse.
book.book Page 131 Wednesday, August 13, 2008 12:12 PM