The power-on self test – Elitegroup G551 User Manual
Page 84
N
N
N
O
O
O
T
T
T
E
E
E
:
:
:
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.
4
4
.
.
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.
T
T
h
h
e
e
P
P
o
o
w
w
e
e
r
r
-
-
O
O
n
n
S
S
e
e
l
l
f
f
T
T
e
e
s
s
t
t
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.
70