The power-on self test – Elitegroup G550 (V1.0) User Manual
Page 87
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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:
•
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.
•
Messages that furnish important information on the power-on and boot processes (such
as memory status). 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 other than the system
board (such as the display, keyboard, or an adapter card) an error message is displayed
on the screen and testing is stopped. It is important to remember that the POST does not
test all areas of the computer, only those that allow it to be operational enough to run
diagnostic programs.
If your system does not successfully complete the POST, but displays a blank screen,
emits a series of beeps, or displays an error code, consult your dealer.
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