Understanding The Power-On Self-Test - Gateway 8400 System Manual

3
Turn on the computer. The top light-emitting diode (LED) at the right
side of the bezel is lit when the power is on.
4
Turn on any other components connected to the computer, such as
speakers, a printer, or a scanner.
If nothing happens when you turn on the system:

Understanding the Power-On Self-Test

When you turn on your computer, the power-on self-test (POST) routine
checks the system memory and components. If POST finds any problems, the
system displays error messages. Write down any error messages that you see.
If you continue to have problems, these error messages may help technical
support diagnose the cause.
Make sure the power cables are securely plugged in and that your
power strip (if you are using one) is plugged in and turned on.
Make sure the monitor is connected to the computer, plugged into
the power strip or AC outlet, and turned on. You may also need
to adjust the brightness and contrast controls on the monitor.
Power LED
Power button
Starting your system
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