HP Pavilion dv5000 Notebook PC Series Quick Start Manual page 6

Power and Caps Lock / Number Lock LEDs do not glow, there is either a very low change or no
charge in the battery. Connect the AC power adapter, verify that the battery power LED
glows, allow the battery to charge for 15 - 30 minutes and then attempt to start the
computer. If it starts, run the battery test and calibrate the battery. If it does not start, if
possible, connect a replacement battery to verify that the battery is the problem.
If the computer does not start after charging the battery, remove the battery and connect the
AC power supply. Verify that the battery power LED glows, and then attempt to start the
computer. If the LED still does not glow, either the AC adapter has failed, or there is a bad
connection between the adapter and the system board. If possible, connect a different AC
power adapter to verify that the adapter is the problem, or contact HP for support which may
require a service event.
Insufficient charge on the battery
If the battery light LED (which looks like a lightning bolt
insufficient charge to start the computer. To resolve this error, try the following solutions.
Connect the notebook PC to AC power and attempt to start the computer again.
Check the AC adapter to confirm that all of the plugs are securely seated.
Determine if the power LED on the AC adapter is lit (if available) to verify that the
computer is receiving AC power from the wall outlet.
If the computer operates on AC power correctly, charge the battery for thirty minutes to
one hour and then restart the computer.
NOTE:Charging the battery for this length of time is called "trickle charging". Trickle
charging is a continuous constant-current charge at a low rate, which recharges the
battery slowly when it is in a deep discharge state. Deep discharge occurs when a
battery is left unused for extended periods of time.
) flashes, the battery has
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