User Manual

Startup Problems
When you turn on the computer, it does not respond and the Power
Indicator does not light green.
 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.
 If you are using the battery power, make sure that the battery is not
discharged.
When you turn on the computer, it stops after POST.
 Restart your computer.
The message “Operatin
g system not found” appears on the
screen after you turn on the computer.
 If this message appears when you are booting from the hard disk,
insert a bootable disc in the optical drive and check the condition of
the hard disk.
 Make sure that the hard disk is recognized correctly in the SCU
program.
The message “Invalid
system disk” or “Disk error” appears
on the screen after you turn on the computer.
 If you are deliberately trying to boot from a CD disc, replace the disc
with a bootable one and press any key to continue booting.
 If you are booting from the hard disk, make sure that there is no CD
disc in the optical drive. If there is, remove it and restart the system.
 If this message appears when you are booting from the hard disk,
insert a bootable disc in the optical drive and check the condition of
the hard disk.
 Make sure that the hard disk is set correctly in the SCU program.
8-14 Troubleshooting