This is the 1st of a 2-part series on the American Megatrends BIOS, or AMIBIOS. You are introduced to what the BIOS is, the beep codes if there is a fault, and the BIOS Setup Utility.
Part 2 looks at the AMIBIOS Update process. This is not really a straightforward process. However, Part 2 tries to present the update BIOS process in easy to follow steps.
There
are several pictures in this tutorial to help your understanding of the
AMIBIOS. Listed below is a link to each feature that is discussed.
This gives you the option to either read through the whole page, or hop to the feature of interest.
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TABLE OF CONTENTS
- What Is BIOS ?
- POST: Power On Self Test
- BIOS Setup
- Final Thoughts
- Share Your AMI BIOS Knowledge
- Read Site Visitors Web Pages
What Is BIOS ?
American Megatrends BIOS, or AMIBIOS as it is commonly known, is one of the most popular BIOS' in the world.
BIOS stands for Basic Input Output System. It is a small piece of software that sits on a chip inside of your computer on its motherboard.
You often hear the BIOS be called: Firmware, System BIOS, CMOS, Flash BIOS, ROM BIOS and RAM BIOS.
(Click Image To Enlarge)
The
BIOS checks that all the parts inside your computer, e.g. keyboard
port, memory, graphics etc., are in working order before your operating
system, e.g. Microsoft Windows 7, is loaded.
The initial check that takes place is called the Power On Self Test (POST). When you first switch your computer on, the POST is taking place when you see this screen (or similar):
(Click Image To Enlarge)
Return to the Table of Contents
POST: Power On Self Test
If the POST
does not detect any problems, your computer, or laptop, or tablet
(etc), will make a short beep noise to let you know your computer passed
the POST test.
Your operating system will then start to load using the information provided by the BIOS. The 'Bootstrap Loader Program' does this automatically.
If
the POST detects a problem with your hardware, it will beep to let you
know. The number of beeps and the subsequent on screen message (unless
it is a graphics card issue) will tell you what the problem is.
There are 11 common American Megatrends BIOS beep codes. These are given in the table below, with some suggestions as to what they mean:
Beep Code | Error Message | Potential Issue |
---|---|---|
1 Beep | DRAM Refresh Failure | Memory or Motherboard |
2 Beeps | Memory Parity Error | Memory or Motherboard |
3 Beeps | Base 64k RAM Failure | Memory or Motherboard |
4 Beeps | Motherboard System Timer Failure |
Motherboard |
5 Beeps | Processor error | Processor (CPU) |
6 Beeps | Gate A20 Keyboard Controller Failure |
Keyboard or Motherboard |
7 Beeps | Process Except Interrupt Error |
Processor (CPU) or Motherboard |
8 Beeps | Display Memory Read Write Error |
Video (Graphics) Card |
9 Beeps | ROM BIOS Checksum Error | BIOS Chip or Motherboard |
10 Beeps | CMOS Shutdown Read/Write Error |
Motherboard |
11 Beeps | Cache Memory Test Failure |
Motherboard |
AMIBIOS BIOS Beep Codes
The PC Guide (Opens New Window) web site has some excellent material on how to troubleshoot AMIBIOS problems.
The information is quite technical. If you are unsure I would advise in this instance to take your machine to a local Small Business Computer Repair shop, or call your computer makers support line.
Return to the Table of Contents
BIOS Setup
The American Megatrends BIOS Setup Utility
provides a lot of details about your computer hardware. You can change
some of the settings if you want to, but in most cases you won't need
to.
Some details are for information only, which you cannot change.
When you switch on your computer, press the Delete key to enter the BIOS Setup Utility.
When you switch on your computer, press the Delete key to enter the BIOS Setup Utility.
There
is only a small window of opportunity to do this before your computer
starts to load the operating system. Therefore, keep pressing the delete
key until the BIOS Setup Utility appears.
On some computers you need to press the F1 or F2 keys on your keyboard to access the BIOS Setup Utility:
(Click Image To Enlarge)
Your AMIBIOS Version
may look different to the image above.However, the menu names (Main,
Advanced etc.) and how you move through each option are usually
consistent, as shown in the right hand side of the image (Select Screen
etc.).
The options in grey are for information only, and cannot be changed e.g. Processor Speed. The options in blue can be changed.
In
the image above, you could change the system time and system date if
you wish, for example, if you have an AMIBIOS laptop and you moved to
another time zone.
You
can also setup BIOS passwords in the Security menu so only you and
selected members of your family can change the BIOS settings:
(Click Image To Enlarge)
Most
home computer users do not need to change any of the BIOS settings.
Don't worry if some or all of this pages doesn't make too much sense to
you. Treat it as information only.
I'm pleased to see you find my work so good you decided to publish it on your blog: http://www.home-computer-support.org/american-megatrends-bios.html.
ReplyDeleteI hope your visitors found the article helpful and informative.
Steve