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18 T
ROUBLESHOOTING
P
RESARIO
N
OTEBOOK
M
AINTENANCE
AND
S
ERVICE
G
UIDE
1200XL S
ERIES
Presario 1200 Series
Models: XL101-XL113, XL115, XL118-XL127
Since symptoms can appear to be similar, carefully match the symptoms of the computer
malfunction against the problem description in the tables to avoid a misdiagnosis.
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WARNING: To avoid a potential shock hazard during troubleshooting procedures,
disconnect all power sources before removing the keyboard cover or the display
bezel.
Before Replacing Parts
Verify that cables are connected properly to the suspected defective parts.
• Run Computer Setup after connecting external devices.
• Verify that all required device drivers are installed.
• Verify that all required changes have been made to the CONFIG.SYS file.
• Verify that all required changes have been made to the AUTOEXEC.BAT file.
• Verify that all printer drivers have been installed for each application.
Solving Minor Problems
Some minor problems and possible solutions are outlined in the following tables. If the
problem appears related to a software application, check the documentation provided with
the software.
Solving Audio Problems
Some common audio problems and solutions are listed in the following table.
Solving Audio Problems
Problem Probable Cause Solution
Computer does not
beep after the Power-
On Self-Test (POST).
This is typical; it indicates
successful completion of the
Power-On Self-Test (POST).
No action is required.