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18 T
ROUBLESHOOTING
P
RESARIO
N
OTEBOOK
M
AINTENANCE
AND
S
ERVICE
G
UIDE
1800 S
ERIES
Presario 1800/1800T Series
Models: XL280, XL380, XL381,
and XL390
Troubleshooting without Diagnostics
This section provides information about how to identify and correct some common
hardware, memory, and software problems. It also explains several types of common
messages that may be displayed on the screen.
Ä
CAUTION: Carefully match the symptoms against the problem described 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.
Select from the following to diagnose and solve problems related to each topic:
Before Replacing Parts
• Verify that all cables are properly connected to the parts that are to be tested.
• Run 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.
• Check the printer connection.
Audio Keyboard/Numeric Keypad
Battery Memory
CD or DVD Drive PC Card
Diskette Drive Power
Display Printer
Hard Drive TouchPad
Hardware Installation