User's Manual

Troubleshooting 8-13
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 disc, replace the disc with
a bootable one and press any key to continue booting.
 If this message appears when you are booting from the hard disk,
insert a bootable disc in the DVD drive and check the condition of the
hard disk.
Other Problems
The date/time is incorrect.
 Correct the date and time via the operating system or BIOS Setup
program.
 After you have performed everything as described above and still
have the incorrect date and time every time you turn on the computer,
the RTC (Real-Time Clock) battery is at the end of its life. Call an
authorized dealer to replace the RTC battery.