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With the computer's power switched off, check all cable connections. If the
computer is connected to any peripheral devices, look for loose or disconnected
cables.
If the computer is too close to a wall, a cable connection may be loose or the cables
may be crimped.
Do not substitute cables for different devices (other than the manufacturer
recommended cables) even if they look exactly alike. The wiring inside the
cable may be different.
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When you are certain that you have power available and all connections are good,
turn the computer on again. If the computer still does not start, you may have a
hardware problem.
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The Power-On Self Test (POST) runs every time you turn on or reset the Notebook.
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 appears next; as the test continues, memory
size increases until all installed memory is tested. Normally, the only test routine visible
on the screen will be the memory test.
Two classifications of malfunctions can be detected during the POST:
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Error messages that indicate a failure with either the hardware, the software, or the
Basic Input/Output System (BIOS). These critical malfunctions prevent the computer
from operating at all or could cause incorrect and apparent results. An example of
a critical error is microprocessor malfunction.
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Messages that furnish impor tant information on the power-on and boot processes
(such as memory status). These non-critical malfunctions are those that cause
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