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9. Connect the power cord (Section 3.2).
10. Connect the power cord to the external outlet.
11. Turn on the computer by pressing the power button.
12. Verify that the power-on password has been cleared. If it has not been
cleared, repeat steps 1 through 7. If the password is still not
cleared refer to the following section for removal procedures.
- Section 3.15, "System Board for Models 400, 410, 420 and 430"
13. Run Computer Setup to reconfigure the system.
Chapter 4.2 Power-On Self-Test (POST)
The Power-On Self-Test (POST) is a series of diagnostic tests that run
automatically when the system is turned on. POST detects which type of
mass storage devices are installed in the computer and checks that the
following assemblies are functioning properly:
o System board
o Processor board
o Memory expansion board
o Internal keyboard controller (self-test, report error if failed)
o External keyboard (self-test, report error if failed)
o Display
o Video controller circuitry
o Trackball assembly (identifies the trackball, but no actual test)
o Hard drive
o Diskette drive
o System memory
Running POST
To run POST, complete the following steps:
1. Turn off the computer by simultaneously pressing the left Ctrl+Alt keys
and power button.
2. Turn on the computer.
- If POST does not detect any errors, the computer beeps one or two
times to indicate that POST has successfully run, and the computer