BenQ Joybook R42 Series User Manual page 43

CD or DVD does not function.
Please verify the following:
• Joybook is turned on, and the CD or DVD discs are properly inserted in
the center of the disc tray in the optical drive.
The disc tray is closed.
•
• The CD or DVD is not bent or badly scratched.
• Noise from the optical drive when the disk plays shows that the optical
drive may be deformed, and the computer needs to be repaired. If the
disc tray does not open after the Eject button is pressed, insert a pin into
the Emergency Eject hole to force the tray out.
DVD movies will not play.
The region code of the DVD inserted must match that of the DVD
playback software used. This region code can be set up to five times. If
you have not reached this limit, a prompt will appear that will allow you
to change the region code of the software to match that of the move.
Otherwise, you can only play back DVDs with the same region code as
the last DVD played back successfully.
Why is the hard drive capacity displayed by the OS be different from its
nominated capacity?
Most users may have discovered that the capacity of a 10GB hard drive
will become 9GB when displayed from the OS; and 20GB become 19GB,
40GB become 38GB..., etc. The bigger the capacity, the bigger the
difference. It is because hard drive makers and OS developers calculate
hard drive capacity in different ways. As a result, the nominated capacity
is different from the exact capacity displayed by the OS.
Calculation of hard drive
capacity by drive makers
1GB=1,000MB
1MB=1,000KB
1KB=1,000 bytes
Calculation of hard drive
capacity by OS developers
1GB=1,024MB
1MB=1,024KB
1KB=1,024 bytes
Example of a 40GB hard drive:
Calculation by drive makers
40GB=40,000MB
=40,000,000KB
=40,000,000,000 bytes
Exact capacity of a 40GB hard drive displayed in the OS:
40,000,000,000÷1024÷1024÷1024=37.2529 (GB).
Furthermore, when you partition a hard drive, the system will reserve
some space on the drive for system files. Therefore, the total capacity of a
hard drive displayed by the OS will never be the same as its nominated
capacity.
I hear noise when connecting an earphone to Joybook.
The instructions below will guide you through the troubleshooting
process.
• Connect the earphone to other devices, such as a radio to see if you can
still hear that noise. If the noise persists, the earphone may be out of
order.
• If you can hear the noise only when inserting, it is the result of high
instantaneous current. It is a normal phenomenon.
How can I reduce the wearing of the screen hinge when I open the screen?
We suggest that you open and close your screen gently and slowly with
both hands. Apply force evenly on both hands to reduce hinge wearing
and prevent deformation or breaking of hinge due to uneven force
application.
What should I do if a program in Windows freezes?
If your system freezes, press <Ctrl> + <Alt> + <Delete> keys
simultaneously, click Start Task Manager. Then, click the Applications tab
under Windows Task Manager, and then click on the application that
freezes and click End Task.
Calculation by OS developers
40GB=40,960MB
=41,943,040KB
=42,949,672,960 bytes
FAQ and troubleshooting 39