Dell Precision M4300 (Mid 2007) - Manual (Page 90)

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Troubleshooting
If the battery status light flashes green and orange, the battery is too hot to charge. Shut down the
computer, disconnect the computer from the electrical outlet, and then let the battery and computer
cool to room temperature.
If the battery status light rapidly flashes orange, the battery may be defective. Contact Dell (see
"Contacting Dell" on page 142 ).
C HECK THE BATTERY TEMPERATURE — If the battery temperature is below 0° C (32° F), the computer will not start
up.
T EST THE ELECTRICAL OUTLET — Ensure that the electrical outlet is working by testing it with another device, such
as a lamp.
C HECK THE A C ADAPTER — Check the AC adapter cable connections. If the AC adapter has a light, ensure that
the light is on.
C ONNECT THE COMPUTER DIRECTLY TO AN ELECTRICAL OUTLET — Bypass power protection devices, power strips,
and the extension cable to verify that the computer turns on.
E LIMINATE POSSIBLE INTERFERENCE — Turn off nearby fans, fluorescent lights, halogen lamps, or other
appliances.
A DJUST THE POWER PROPERTIES — See "Configuring Power Management Settings" on page 33.
R ESEAT THE MEMORY MODULES — If the computer power light turns on but the display remains blank, reinstall
the memory modules (see "Memory" on page 115).
Ensuring Sufficient Power for Your Computer
Your computer is designed to use a 65-W or 90-W AC adapter. However, for optimum system
performance, you should always use a 90-W adapter.
Using less-powerful AC adapters, including the 65-W AC adapter, will cause you to receive a WARNING
message.
Docking Power Considerations
Due to the extra power consumption when a computer is docked to the Dell D/Dock, normal computer
operation is not possible on battery power alone. Ensure that the AC adapter is connected to your
computer when the computer is docked to the Dell D/Dock.
Docking While the Computer Is Running
If a computer is connected to the Dell D/Dock or Dell D/Port while the computer is running, presence of
the docking device is ignored until the AC adapter is connected to the computer.
AC Power Loss While the Computer Is Docked
If a computer loses AC power while docked to the Dell D/Dock or Dell D/Port, the computer
immediately goes into low-performance mode.