62 Solving Problems
No sound from headphones
Video and Monitor Problems CAUTION: Before you perform any of the procedures in this section, follow the safety instructions in the Product
Information Guide.
NOTE: See the monitor documentation for troubleshooting procedures.
The screen is blank
DISCONNECT HEADPHONES FROM THE HEADPHONE CONNECTOR —Sound from the speakers is
automatically disabled when headphones are connected to the computer’s front-panel headphone
connector.
TEST THE ELECTRICAL OUTLET —Ensure that the electrical outlet is working by testing it with another
device, such as a lamp.
ELIMINATE POSSIBLE INTERFERENCE —Turn off nearby fans, fluorescent lights, or halogen lamps to
check for interference.
REINSTALL THE SOUND DRIVER —See "Reinstalling Drivers" on page71.
RUN THE HARDWARE TROUBLESHOOTER—See "Resolving Software and Hardware Incompatibilities"
on page72.
CHECK THE HEADPHONE CABLE CONNECTION —Ensure that the headphone cable is securely inserted
into the headphone connector (see "Front View of the Computer" on page13).
ADJUST THE WINDOWS 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.
CHECK THE MONITOR CABLE CONNECTION —
• 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.
• Swap the computer and monitor power cables to determine if the power cable is defective.
• Check the connectors for bent or broken pins (it is normal for monitor cable connectors to have missing
pins).
DIM_book.book Page 62 Monday, October 15, 2007 11:04 AM