User’s Manual 8-12
Troubleshooting
Sound System
Press hot keys FN + F5 to change the display 
priority and make sure it is not set for the internal 
display.
Display error occurs Check that the cable connecting the external 
monitor to the computer is attached firmly.
If problems persist, contact your dealer.
Problem Procedure
Problem Procedure
No sound is heard
Adjust the volume by pressing
 FN + 3 to 
decrease or FN + 4 to increase.
Check the software volume settings.
Make sure the headphone connection is secure.
Check Windows Device Manager. Make sure the 
sound function is enabled and that settings for I/O 
address, Interrupt level and DMA are correct for 
your software and do not conflict with other 
hardware devices that you may have connected 
to the computer.
If problems persist, contact your dealer.