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The power-on self test (post), Using post to access bios and troubleshoot, Bios – Asus PU401LA User Manual

Page 90: Accessing bios

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Notebook PC E-Manual

The Power-on Self Test (POST)

The Power-on Self Test (POST) is a series of software-controlled

diagnostic tests that run when you turn on or restart your Notebook PC.

The software that controls the POST is installed as a permanent part of

the Notebook PC’s architecture.

Using POST to access BIOS and Troubleshoot

During POST, you can access the BIOS settings or run troubleshooting

options using the function keys of your Notebook PC. You may refer to

the following information for more details.

BIOS

The Basic Input and Output System (BIOS) stores system hardware

settings that are needed for system startup in the Notebook PC.

The default BIOS settings apply to most conditions of your Notebook

PC. Do not change the default BIOS settings except in the following

circumstances:

An error message appears onscreen during system bootup and

requests you to run the BIOS Setup.

You have installed a new system component that requires further

BIOS settings or updates.

WARNING: Using inappropriate BIOS settings may result to system

instability or boot failure. We strongly recommend that you change the

BIOS settings only with the help of a trained service personnel.

Accessing BIOS

Restart your Notebook PC then press

during POST.

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