User's Manual

Troubleshooting 8-15
l Check the volume control of your computer.
Startup Problems
When you turn on the computer, it does not respond and the Power
Indicator does not appear.
l If you are using an external AC power, make sure that the AC
adapter is correctly and securely connected. If so, make sure that the
electrical outlet works properly.
l If you are using the battery power, make sure that the battery is not
discharged.
l Check your settings for the item Power Button Define on the SCU
Setup’s “Advanced menu.” It might be set at ê Power necessitating
a combination of pressing the speaker volume / LCD brightness
down arrow key located on the front panel plus the power button to
be able to turn on/off system power
When you turn on the computer, it stops after POST.
l Restart your computer.
The message “Operating system not found” appears on the screen
after you turn on the computer.
l Make sure that there is no floppy disk in the floppy disk drive. If
there is, remove it and restart the system.
l If this message appears when you are booting from the hard disk,
insert a bootable disk in the floppy disk drive and check the
condition of the hard disk.
The message “Invalid system disk” or “Disk e rror” appears on the
screen after you turn on the computer.
l If you are deliberately trying to boot from a floppy disk, replace the
disk with a bootable one and press any key to continue booting.
l If you are booting from the hard disk, make sure that there is no
floppy disk in the floppy disk drive. If there is, remove it and restart
the system.