Solving Problems 47
No sound from headphones
Video and Monitor Problems CAUTION: Before you begin any of the procedures in this section, follow the safety instructions located in the
Product Information Guide.
NOTE: See the monitor documentation for troubleshooting procedures.
The screen is blank
RUN THE SPEAKER DIAGNOSTICS —See your speaker documentation for more information.
REINSTALL THE SOUND DRIVER —See "Reinstalling Drivers" on page55.
RUN THE HARDWARE TROUBLESHOOTER—See "Resolving Software and Hardware Incompatibilities"
on page56.
CHECK THE HEADPHONE CABLE CONNECTION —Ensure that the headphone cable is securely inserted
into the headphone connector (see "Front and Back 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 monitor’s power cable is defective.
• Check the connectors for bent or broken pins (it is normal for monitor cable connectors to have missing
pins).
CHECK THE MONITOR POWER LIGHT —
• If the power light is lit or blinking, the monitor has power.
• If the power light is off, firmly press the button to ensure that the monitor is turned on.
• If the power light is blinking, press a key on the keyboard or move the mouse to resume normal
operation.