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United States January 2, 2003
Maintenance & Service Guide
Presario 1600 Series Portable Computers
Notice | Preface | Home | Product Description | Troubleshooting | Illustrated Parts Catalog
Removal & Replacement Procedures | Specifications | Connector Pin Assignments | Battery Pack
Power Solutions
Solving Minor Problems
Some minor problems and possible solutions are outlined here. If the
problem appears related to a software application, check the documentation
provided with the software.
Solving Power Problems
Also see Solving Battery and Battery Gauge Problems.
Solving Power Problems
Problem Probable Cause Solution(s)
Computer won't turn on and
battery pack is not inserted*.
Computer is not connected
to a power source.
Power cords to the external
power source are
unplugged.
Insert battery or connect an
external power source.
Ensure that power cords
connecting the computer and
the external power source
are plugged in properly.
Power adapter is defective. Replace AC Adapter and
restart.
The computer doesn't timeout
while on AC power
The system is designed not
to timeout while on AC
power.
Windows will spin down the
hard drive. Windows can be
configured to power off the
monitor using the display
properties control panel
applet. Alternatively, the
user can change "BIOS-PM
on AC" in the BIOS setup.
Computer turned off while it was
left unattended and the power icon
is off.
System board is defective. Replace the system board.
System initiated Hibernation
due to a critical low-battery
condition.
Replace the battery pack with
a fully charged battery pack
or connect the computer to
an external power source.
Then turn on the computer.
System initiated Hibernation
after a preset timeout.
Turn on the computer.
* In rare cases, it may be necessary to remove the power cord and the
battery, wait 30 seconds, and reinsert the power cord to power on the unit.
The above steps reset the keyboard controller which is usually always
powered, even when the computer appears to be off.
Back to Troubleshooting Without Diagnostics
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