BenQ Joybook L41 Series User Manual page 57

Start
1. Click .
2. Right-click My Computer
Hardware Device Manager
>
Universal Serial Bus controllers
3. Double-click the
to expand it.
4. Right-click USB Root Hub
Power Management
.
Allow the computer to turn off this device to
5. Deselect
save power
.
6. Repeat Step 4 to Step 5 for each USB Root hub.
OK
7. Click , and then close
Why does the keyboard and/or palm rest get warm?
Typically, the Joybook tends to be warm slightly. The location of
the hard disk is typically underneath the palm rest and as a
result, the palm rest gets warm. The location of the processor is
typically underneath the keyboard. And since the heat rises, the
keyboard may get warm slightly. Since your Joybook has a
thermally controlled fan, when the CPU and/or internal
temperature of the Joybook reaches a certain temperature level,
the fan is turned ON and stays ON until the temperature drops
to a pre-defined level.
There is no sound coming from the speakers.
Verify the following:
• The speakers may have been muted. Check the volume control
(speaker icon) in the notification area located in the lower
right corner of the desktop to see if the volume has been
muted. If so, please restore the volume.
• The speakers may have been turned off. Use the <Fn> + <F6>
hotkey combination to turn them on.
and select Properties >
.
branch
, and then click Properties
Device Manager
.
• The volume may have been set too low. Use the <Fn> + <F8>
hotkey combination to increase the volume.
• An earphone or external speakers may have been connected to
the audio output jack, turning off the Joybook's built-in
speakers automatically.
>
Why is the hard disk capacity displayed by the OS different from
its nominated capacity?
You may have discovered that the capacity of a 10GB hard disk
becomes 9GB when displayed from the OS, and 20GB becomes
19GB, etc. The bigger the capacity, the bigger the difference. It is
because hard disk manufacturers and OS developers calculate
hard disk capacity in different ways. As a result, the nominated
capacity is different from the exact capacity displayed by the OS.
Calculation of hard disk
capacity by hard disk
manufacturers
1GB=1,000MB
1MB=1,000KB
1KB=1,000 bytes
Example of a 40GB hard disk:
Calculation by hard disk
manufacturers
40GB=40,000MB
=40,000,000KB
=40,000,000,000 bytes
Calculation of hard disk
capacity by OS
developers
1GB=1,024MB
1MB=1,024KB
1KB=1,024 bytes
Calculation by OS
developers
40GB=40,960MB
=41,943,040KB
=42,949,672,960 bytes
FAQ and troubleshooting 53