Other Problems; Resetting The Computer - Prestigio Nobile 1520 User Manual

The message "Operating system not found" appears on the screen after you turn on the computer.
Make sure that there is no floppy disk in the floppy disk drive. If there is, remove it and restart the computer.
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 error" appears on the screen after you turn on the
computer.
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.
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 computer.
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.

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.

Resetting the Computer

You may have to reset (reboot) your computer on some occasions when an error occurs and the
program you are using hangs up.
If the computer operation seems to hang up, first wait. It is possible that the computer is processing data. Periodically
check the hard disk drive in-use indicator, if it flashes irregularly, the program may be accessing data and preventing you
from using the keyboard. If you are sure the operation has stopped and you cannot use the "restart" function of the
operating system, reset the computer.
Reset the computer by any one of these methods:
Press Ctrl+Alt+Del.
If the above action does not work, turn off the computer. Wait for at least five seconds and turn it on again.
CAUTION: Resetting will cause any unsaved data to be lost.
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PRESTIGIO NOBILE 1520