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You have installed an external keyboard or 1. Your external device is not properly installed. 1. Re-install your device. (See Mouse or
mouse,and it does not seem to work. Keyboard on pages 112-113.)
2. Your operating system software is not 2. Check your device and operating
setup with the correct software driver for system documentation and activate the
that device. proper driver.
3. Your mouse or keyboard is connected to the 3. Plug the mouse into the PS/2 Mouse port
wrong PS/2 port of the Enhancement Unit. and the external keyboard or numeric
keypad into the PS/2 Keyboard port.
You have connected an external keyboard or a 1. Your operating system software is not setup 1. Check your device and operating system
mouse and it seems to be locking up the system. with the correct sof t w a re driver for that devi ce .
doc u m en t a ti on and activa te the proper driver.
2. Your system has crashed. 2. Restart your system by shutting down
and/or turning off the power, waiting at
least 10 seconds and then turning the
power on again.
Memory Problems
Your power on screen or Main menu of the 1. Your memory upgrade module is not 1. Remove and re-install your memory
BIOS setup utility information does not show properly installed. upgrade module. (See Memory Upgrade
the correct amount of installed memory. Module on pages 115-118.)
2. You have a memory failure. 2. Make sure display of error messages is
enabled (see Boot Options Submenu on
pages 67-68), and check for Power On Self
Test (POST) messages. (See pages 140-142
for possible messages and their meanings.)
Symptom Possible Cause Possible Solution