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into electrical and mechanical problems. You will know you have a hardware problem if
the screen is dark, the computer cannot read the disk drives, or you get an error
message during the Power-On Self Test (POST).
Software errors can occur at several levels. The ROM BIOS and the operating system
can give you a large number of error messages. On top of this, each application
software package has its own set of error messages. It is important to determine
whether the software error message you are getting is from the application or the
operating system. Once you know this, you can look in the respective manual for a
solution to the problem.
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Start by performing a careful visual inspection of the exterior of the computer. If no
LEDs are illuminated, make sure that your computer and its peripherals are getting power
and communicating with each other properly.
To check the power cables, and connections:
1
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If you have been using battery power, connect the Notebook to an external power
source and make sure that the battery has a charge.
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If you are using the Notebook with the AC adapter, check the power outlet, the
power cord, and any power switches that may affect your computer.
•
Check the wall outlet or power strip with an item that you know is
functioning properly. A lamp or radio is a convenient item for checking the
power. You may also need to check the fuses and breakers in your electric
box.
•
If the outlet is controlled by a wall switch, make sure that the switch is on.
•
If the outlet is controlled by a dimmer switch, use a different outlet.
•
If your computer is plugged into a power strip with an On/Off switch, make
sure the switch is on.
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