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 page 71.
RUN THE HARDWARE TROUBLESHOOTER — See "Resolving Software and Hardware Incompatibilities"
on page 72.
CHECK THE HEADPHONE CABLE CONNECTION — Ensure that the headphone cable is securely inserted
into the headphone connector (see "Front View of the Computer" on page 13).
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).
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