Power-on Self Test
Chapter Two - System Features
40
Traveling with the TransPort NX
For safety, security, and convenience when traveling with your computer, follow
these guidelines:
•
Before traveling, save your data by backing it up onto floppy diskettes.
•
Take along an extra backup copy of your data.
•
Do not travel with a diskette in the floppy disk drive.
•
Do not transport the TransPort NX with the power on. This may result in
loss of data and/or damage to the hard disk drive.
•
Before traveling, disconnect the AC adapter from the computer.
•
Always carry either a spare fully charged battery pack or the AC adapter.
•
When carrying the computer, take care not to bump it into things. The
computer cannot take the kind of treatment that you might give a briefcase.
•
Whenever possible, hand-carry the computer in its carrying case.
•
If you must ship your computer as freight or baggage, pack it carefully. Use
the original cartons and foam cushions, if possible. If they are not available,
use sturdy cartons and cushion the computer well on all sides.
Power-on Self Test
The Power-On Self Test (POST) runs every time you turn on the computer. The
POST checks memory, the main system board, the display, the keyboard, the disk
drives, and other installed options.
A few seconds after you turn on your computer, a copyright message appears on
your display screen. A memory test message will appear next. The test continues
until all installed memory is tested. Normally, the only test routine visible on the
screen will be the memory test.
Two kinds of malfunctions can be detected during the POST:
•
Error messages that indicate a failure with the hardware, the software, or
the BIOS. These critical malfunctions prevent the computer from operating
at all or could cause incorrect results. An example of a critical error is a
microprocessor malfunction.
•
Messages that furnish important information (such as memory status,
power-on, and boot processes). These non-critical malfunctions are those
that cause incorrect results that may not be readily apparent. An example
of a non-critical error would be a memory chip failure.
In general, if the POST detects a system board failure (a critical error), the
computer halts and generates a series of beeps. If failure is detected in an area
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