Fujitsu LIFEBOOK LH531 Guide D'utilisation page 78

Problem
You installed an external
keyboard or mouse, and it
does not seem to work.
(continued)
You have connected an
external keyboard or a
mouse and it seems to be
locking up the system.
Memory Problems
Your System Properties
screen does not show the
correct amount of installed
memory.
USB Device Problems
You have installed a USB
device, but the notebook
does not recognize the
device, or the device does
not seem to work properly.
Possible Cause Possible Solutions
Your external device is Re-install your device. See "Device Ports" on page 63.
not properly installed.
Your operating system Check your device and operating system documentation and acti-
software is not setup vate the proper driver.
with correct software
driver for that device.
Your system crashed. Try to restart your notebook.
Your memory module is Remove and re-install your memory upgrade module.
not properly installed. See "Memory Upgrade Module" on page 59.
You have a memory Check for Power On Self Test (POST) messages.
failure. See "Power On Self Test Messages" on page 79.
The device is not prop- Remove and re-install the device. See "Device Ports" on page 63.
erly installed.
The device may have Close the application and restart your notebook.
been installed while an
application was running,
so your notebook is not
aware of its installation.
Your device doesn't See your software documentation and activate the correct driver.
have the correct driver.
72 - Troubleshooting