Solving Problems 73
No sound from headphones
CHECK THE HEADPHONE CABLE CONNECTION — Ensure that the headphone cable is securely inserted into
the headphone connector. See “audio connectors” on page 15.
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.
Touch Pad or Mouse Problems
CHECK THE TOUCH PAD SETTINGS —
1
Click the
Start
button, click
Control Panel
, and then click
Printers and Other Hardware
.
2
Click
Mouse
.
3
Try adjusting the settings.
CHECK 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.
TO VERIFY THAT THE PROBLEM IS WITH THE MOUSE, CHECK THE TOUCH PAD —
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.
REINSTALL THE TOUCH PAD DRIVER —
See “Reinstalling Drivers and Utilities” on page 75.
Video and Display Problems
CAUTION: Before you begin any of the procedures in this section, follow the safety instructions in the Product
Information Guide.
If the display is blank
NOTE: If you are using a program that requires a higher resolution than your computer supports, it is
recommended that you attach an external monitor to your computer.
C
HECK THE BATTERY —
If you are using a battery to power your computer, the battery charge may be
depleted. Connect the computer to an electrical outlet using the AC adapter, and turn on the computer.
TEST THE ELECTRICAL OUTLET —
Ensure that the electrical outlet is working by testing it with another
device, such as a lamp.
CHECK THE AC ADAPTER —
Check the AC adapter cable connections. If the AC adapter has a light, ensure
that the light is on.
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