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USB devices quit working unexpectedly in Microsoft Windows XP.
This is because USB devices such as camera, scanners. or printer loses its
connection and stops working unexpectedly. Please follow the steps
below to resolve the problem.
1. Click Start, and right click My Computer.
2. Click Properties and then Hardware.
3. Click Device Manager.
4. Double-click the Universal Serial Bus Controllers branch to expand it.
5. Right-click USB Root Hub, and then click Properties.
6. Click Power Management.
7. Deselect Allow the computer to turn off this device to save power.
8. Repeat steps 5 through 7 for each USB Root hub.
9. Click OK, and then close Device Manager.
Why does the keyboard and/or palm rest get warm?
Typically, the Joybook tends to be slightly warm. The location of the
battery 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 heat rises, the keyboard may slightly get warm. There
is no need to be concerned. However, since your computer has a
thermally controlled fan, when the CPU and/or internal temperature of
the notebook reaches a certain temperature level, the fan is turned ON
and stays ON until the temperature drops to a pre-defined level.
The U, I, O, P, J, K, L keys on my Joybook are coming up as numbers
instead of letters?
The number keys are enabled. Press the Num Lk (Number Lock) key
once to disable the number lock function, and the letters will return to
normal.
There is no sound coming from the speakers.
Check the following:
•
The speakers may have been muted. Look at the volume control
(speaker icon) on the Windows Taskbar to see if mute has been set. If so,
turn off the mute.
•
The speakers may have been turned off. Use the <Fn> + <F7> hotkey
combination to turn them on.
•
The volume may have been set too low. Use the Volume Up/Down
Button to increase the volume.
•
An earphone or external speakers may be connected to the audio-out
jack, automatically turning off the computer's internal speakers.
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
disk 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 byte
Calculation of hard drive
capacity by OS developers
1GB=1,024MB
1MB=1,024KB
1KB=1,024 byte
FAQ and troubleshooting
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