S e c t i o n F i v e
106
There is no sound coming from the built-in
speakers.
An error message is displayed on the screen
during the notebook turn on (boot) sequence.
5. The device and another device are assigned
the same I/O address.
1. The volume knob is turned too low.
2. The software volume control is set too low.
3. Headphones are plugged into your notebook.
4. BIOS Audio settings are incorrect.
5. Software driver is not configured correctly.
1. Power On Self Test has detected a problem.
5 . Ch eck all I/O ad d resses in the BIOS Setu p
Uti l i ty and the other install ed hardw a re and sof t-
w a re and make su re there are no du p l i c a ti on s .
1. Adjust the volume control knob on the right
side of your notebook.
2. Adjust the sound volume control settings in
the software, both operating system and appli-
cations.
3. Plugging in headphones disables the built-in
speakers, remove the headphones.
4. Set the BIOS Setup Utility, Audio Features
Submenu of the Advanced Menu to the default
values.
5. Refer to the application and operating system
documentation for help.
1 . See the Power On Sel f Test Me s s a ges to deter-
mine the meaning and severi ty of the probl em .
Not all messages are errors ,s ome are simply statu s .
Problem
Possible Cause
Possible Solution
Summary of Contents for 420D
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