Over the years Asus has gained prominence as a brand for their trusted service and amazing high-performance devices like laptops and mobiles. Even though Asus produce different types of devices but they are mainly popular among the consumers for their robust desktops and laptops. From flexible and lightweight Zenbook laptop to ROG gaming laptop, they have a wide range of variety to serve the different purpose of the consumers. But no matter what type of Asus PC you are buying, BIOS plays an important part in it.

For a long time, BIOS errors posed a lot of difficulty for the Asus computer users. Without proper knowledge, BIOS errors are not only difficult to fix but can also cause permanent damage to your computer if you don’t handle it carefully. That’s why we are here today to share our knowledge about some common Asus BIOS error codes and their fixes with our readers.

BIOS and its Importance for Computers

BIOS or basic input/output system is a program which is used in the personal computer’s microprocessor for various purposes and is a crucial system in computers. It manages the data flow between the computer’s Operating System and attached devices such as keyboard and printer. When users boot up their computer, at first BIOS determines whether all of the attachments are in place and in operational position or not. After confirming all the factors, it loads the Operating System into your computer’s random access memory (RAM) from your hard disk or diskette drive.

Generally, modern motherboards have two BIOSes. One is completely Read-only and the other is EEPROM. If the main BIOS becomes corrupt, the second BIOS can be used to restore the original BIOS. If somehow both of the available BIOS get damaged, it can cause various kinds of problems for the users.

In general, BIOS sends an error message or notification after detecting an error during the power on self-test. But sometimes, the problem is detected so early in the test that BIOS is not able to access the video card to print the message. So, in that case, BIOS sends beeping noise pattern to the user to tell him the actual problem in your computer. The meaning of the beep pattern depends on what type or version of BIOS you are using in your Asus computer. Follow the next section of the article to know more about Asus BIOS beep codes.

Identify Asus BIOS Error Codes with Beep Codes

Beep Codes helps you to identify the root of the error without the need of giving too much effort in finding the problem. So if you are able to identify the message behind the beep then you can easily and quickly solve the problem without going through too many methods.

Most of the Asus computer use AMI BIOS. So in this article, we are only providing the beep code message of the AMI BIOS and their most potential solutions.

Codes:

• 1 Beep: The memory refresh circuitry has failed

           Solution: Reseat memory or replace with known good chips

• 2 Beep: Parity errors have been detected in the first 64 KB of memory

            Solution: Reseat memory or replace with known good chips

• 3 Beep: A failure has occurred within the first 64 KB of memory

           Solution: Reseat memory or replace with known good chips

• 4 Beep: System Timer failure: Timer 1 on the motherboard does not work properly

           Solution: Repair/replace the motherboard

• 5 Beep: The CPU has generated an undetectable error

           Solution: Repair/replace the motherboard

• 6 Beep: 8042 Gate-A20 failure: BIOS cannot switch the CPU into protected mode

           Solution: Reseat keyboard controller chip, replace the keyboard controller chip, check  

                            for a keyboard fuse, or try a different keyboard

• 7 Beep: The CPU has generated an exception error

           Solution: Repair/replace the motherboard

• 8 Beep: The video adapter is missing, or the memory on the adapter has generated a failure

           Solution: Replace video card or video card memory

• 9 Beep: The ROM checksum value does not match the value in BIOS

           Solution: Replace chips or motherboard

• 10 Beep: The shutdown register for CMOS interrupt channel 2 has failed POST; the system board cannot retrieve CMOS contents during POST

           Solution: Repair/replace the motherboard

• 11 Beep: Level-2 cache memory has failed the tests, and has been disabled

           Solution: Repair/replace the motherboard

For Latest Version of AMI BIOS:

• 2 Short Beep: POST has failed, caused by a failure of one of the hardware tests
• 1 Long 2 Short Beep: Failure in video system: a checksum error was encountered in video BIOS ROM, or a horizontal retrace failure has been encountered

           Solution: Check the video card

• 1 Long 3 Short Beep: Failure in video system: the video DAC, the monitor detection procedure or the video RAM has failed

           Solution: Reseat the RAM or replace with known good chips

• 1 Long Beep: POST procedures have passed

Common Asus BIOS Error Notification

Other than beep code, Asus BIOS also display some notifications in the computer during POST check up of your computer. Some of the common error notifications are:

BIOS Error #1- Failed Device Error Notification

Failed Device is one of the common BIOS error notifications displayed to the Asus users and generally occurs when a new removal device such as a flash drive or USB device connects to your PC.

The reason for this problem can be a faulty PC port or it can be possible that the defective USB device or drives are causing the issue.

Solution:

If your Asus PC is old, then we will recommend checking the port by trying to connect other removal devices with it. If the problem is still showing then it means that the port is faulty and you need to replace it as soon as possible. But if the problem is fixed after connecting with a new device then there is no doubt that your previous removal device is defective or unstable which caused the error.

BIOS Error #2- Failed to Overclock

This error notification shows up whenever your BIOS settings have been cleared. Other than that, some other root problems of this error notification are:

• Your CMOS battery is failing
• Overclocking your RAM or CPU
• Your system has been physically moved
• Your system is having power issues
• Adding a new device which is defective

Solution:

If this problem occurs in your device, then you have no other choice except seeking the help of an expert. To avoid this kind of situation we recommend not overclocking the RAM or CPU. Because overclocking means you are basically telling your PC to send more power to the CPU or RAM than the component was designed for, in order to increase speed and performance. Overclocking decreases the life expectancy of your PC, and also damages its components. It also increases the heat levels of your Asus computer which put more wear and tear on its components.

BIOS Error #3- CPU Fan Error

CPU Fan Error notification occurs when the settings in the BIOS have been reset due to improper shutdown. Sometimes the error also occurs when Asus is using a silent fan whose rotation speed is slower than the normal fans.

Solution:

The best and quickest way to fix the error is to disable the CPU fan speed sensor if you are using a silent fan in your Asus computer. Because silent fan spin is way slower than the standard fans which make the motherboard to think the fan is dying. So simply disabling the sensor can solve the problem for you.

The method of turning off the fan sensor depends on the BIOS version. So, you can take the help of user manual to configure your BIOS. Otherwise, you can follow the below steps as an example:

• If you see this CPU Fan Error, the first thing you have to do is push the F1 key to load the BIOS screen.
• Now go to the hardware monitor section of the BIOS and then turn off all the fan sensors option manually.
• Once the changes are made, exit the BIOS screen by confirming the changes and then restart the Asus computer to apply the configuration.

BIOS Error #4- Boot Device Error

A Boot Device Error is the most common problem for modern motherboards. When the DVD drive or hard drive is set to boot as a UEFI, it may not always work in your computer. So, it is suggested to make sure that the primary boot device is either the DVD or hard drive, and not the UEFI DVD variant if you are having the issue.

Solution:

There are quite a few options available in the boot menu of a modern motherboard to avoid the problem. If you scroll down on the boot page, you will be able to see the list of the primary DVD and hard drive boot options. Simply select the DVD or hard drive boot option and make sure that UEFI is not at the top of the list. After settings are saved, you should be able to boot off of the drives, with no issues.

Here is the full guide of changing the settings:

• At first, login into the BIOS by hitting the Delete key or F2 key.
• Then hit the F7 key to access the advanced view mode.
• Next, navigate to the boot menu and scroll down until you see the boot options.
• Now make sure that the primary boot options are not the UEFI variants, as they will list twice.
• After that hit the F10 key or select the save and reset option to complete the whole process.

BIOS Error #5- Asus Crosshair V Formula Z Error Code 66

Asus Crosshair V formula z error code 66 is a very complicated BIOS notification. Because this error notification does not indicate any particular reason for the issue. But many users claim that the error code 66 occurs in their Asus crosshair V formula z motherboard due to your computer’s memory related issue. So changing the memory kit completely resolved the problem for them.

BIOS Error #6- Asus Crosshair VI Hero Error Code 0d

Asus crosshair VI hero error code 0d problem is also a little bit complicated for users because this notification can be displayed for various reasons which include Asus Laptop driver not updated, Ram issue, CMOS issue and many more. So you have to use numbers of testing to find the root cause of the problem and resolve the issue. Some of them are:

• Ensure that your Computer’s HDD/SSD is correctly connected
• Allow Your Computer to Detect Foreign HDDs and SSDs
• Update your BIOS.

Wrapping it Up

We hope our article was able to clarify your query regarding the Asus BIOS error codes. We have tried our best to cover up the most common and important BIOS error codes. In case we have forgotten to mention any important error then please let us know. We will update our article as soon as possible. If you’re still facing problems after following our methods, then we highly recommend contacting an expert for better guidance.