What is a BIOS update and do you need it?

A BIOS update is an update to the computer's main system software (firmware) that can solve various technical problems and improve the device's performance. This process, while it may seem complicated, is often necessary to ensure optimal computer performance. As with any technical procedure, updating the BIOS has its advantages and risks, which are important to understand

In this article, you will learn what exactly the BIOS is, when it is worth updating it, what are the possible advantages and risks, how to check whether your computer needs an update, and how to safely carry out the update process itself.

What is BIOS and why is it important?

BIOS (Basic Input/Output System) is essential computer software written on a special chip on the motherboard. It is the first program that starts when you turn on your computer, even before the operating system starts working. BIOS firmware is responsible for recognizing and checking the main computer components: processor, RAM, hard disk and other devices.

One can think of the BIOS as an intermediary between the computer hardware and the operating system. It performs the following main functions:

initializes and tests the computer's hardware during startup (POST - Power-On Self Test)

sets basic hardware parameters

transfers control to the operating system

manages power saving functions

allows the user to change various system settings

Modern computers usually use a more modern version of the BIOS, called UEFI (Unified Extensible Firmware Interface), which offers better interfaces, greater functionality and support for the latest devices. However, users still often refer to it simply as "BIOS," even though it's technically UEFI.

Types of BIOS: UEFI and Legacy

Two main types of BIOS can be distinguished in modern computers:

Legacy BIOS - a traditional system used in older equipment, with limited functionality and supporting MBR disk structure.

UEFI is a more modern system that supports GPT disk structure, larger than 2TB disk capacity, faster startup, better interface and additional security features.

Manufacturers are constantly improving motherboard BIOS by fixing bugs, adding new features and improving compatibility with the latest hardware. It is for this reason that BIOS updates are periodically released, which can significantly improve the stability and functionality of the computer.

When is it worth and when not to update the BIOS?

Updating the BIOS is not a daily procedure that should be done regularly or without a good reason. Unlike operating system or software updates, BIOS updates usually fix specific problems or add new features.

When to update the BIOS:

after installing a new processor that is not supported by the current BIOS

to add support for newer RAM or SSDs

to address stability issues such as persistent system "crashes" or freezes

to fix security vulnerabilities, especially if the manufacturer has released an update to fix a specific security issue

to resolve known hardware compatibility issues

to improve power management or fan control

When you should not update the BIOS:

when the system is stable and there is no specific need

if the update does not have any features or fixes that are relevant to your system

if you do not have experience with the technical aspects of the computer

if there is no reliable power supply (battery charging on the laptop)

when you use unofficial, untested updates

It is important to understand that an incorrectly performed BIOS update can cause the computer to malfunction. For example, one user, trying to improve his computer's support for newer video cards, performed a BIOS update without proper preparation. Due to a power outage during the process, his motherboard became inoperable and required professional assistance.

Benefits and Risks of Updating the BIOS

Before deciding to update the BIOS, it is important to consider the potential benefits and risks. Here are the main aspects to consider:

Benefits:

Improved compatibility – new updates often add support for newer processors, memory modules or other devices.

Bug Fixes – Manufacturers are constantly fixing bugs they find that can cause system instability.

Security Updates – Updates can fix security vulnerabilities at the firmware level.

Additional Features - Newer BIOS releases sometimes add new features, such as improved fan control or power saving.

Improving system stability - Sometimes updates fix specific stability issues.

Risks:

“Bricked” computer – if the upgrade process is interrupted (for example, due to a power outage), the motherboard may become inoperable.

Compatibility Issues - In rare cases, the new BIOS may be less compatible with some of your devices.

Loss of settings - updating often restores factory settings, so you will have to reconfigure the BIOS.

Malicious updates – Downloading an update from an untrusted source can install malicious software.

Possible loss of warranty - Some manufacturers may refuse to repair equipment under warranty if damage is caused by a BIOS update.

Real-life example: An IT professional shared an experience where a long-standing issue with unreliable USB ports on a particular laptop was resolved after a BIOS update. However, another user encountered a new problem after the update - his PC fans started to run louder, and additional BIOS setting changes were required to resolve this issue

How to check if your BIOS needs to be updated?

Before deciding to update the BIOS, you need to find out what version is currently installed on your computer and whether a newer version is available. Here are some ways to check the current BIOS version:

1. Checking through the BIOS interface

Reboot the computer and press a special key during startup (usually Delete, F2, F10, F12 or Esc - depending on the manufacturer)

When you enter the BIOS/UEFI interface, look for information about the BIOS version, it is usually displayed on the main screen

Write down the BIOS version number and date

2. Checking In the Windows environment

Press Win+R and type "msinfo32", then press Enter

In the window that opens, look for the "BIOS version/date" section

Here you can find the current BIOS version and its release date

3. Using the manufacturer's software

Many computer manufacturers (HP, Dell, Lenovo, ASUS) offer special programs that can check and update the BIOS

These programs often show not only the current version, but also inform about possible updates

Once you know your current BIOS version, you need to check for a newer version:

Visit the official motherboard or computer manufacturer website

Find your computer/motherboard model (it is important to determine the exact model number)

Download support or downloads section and look for BIOS updates

Compare the version number of the latest update with your current one

Read the update notes to find out what issues are fixed or features added

Before deciding to update, it is important to check carefully that the update is really for your specific model. Installing the wrong BIOS update can make your computer inoperable.

How to update BIOS safely? (Step by Step)

Updating the BIOS is a serious process that needs to be done carefully and methodically. Here's a step-by-step guide on how to safely update your computer's BIOS:

Preparing for the Update

Back Up Your Important Data - While a BIOS update shouldn't directly affect your data, it's always better to be prepared.

Ensure a stable power supply : For desktop computers: use an uninterruptible power supply (UPS)

For laptops: make sure the battery is fully charged and connected to the mains

Close all programs and disable anti-virus software that could interfere with the update process.

Only download the correct BIOS update from the manufacturer's official website.

Read the manufacturer's instructions carefully - each manufacturer may have specific recommendations.

Basic BIOS update methods

Depending on your computer model and manufacturer, several update methods are available:

1. Update via Windows program

Run the BIOS update program provided by the manufacturer

Select the downloaded BIOS file or let the program automatically detect and download the correct version

Follow the program instructions and start the update process

Do not interrupt the process - the computer will reboot several times

2. Updating through the BIOS interface

Copy the BIOS file to a USB flash drive (FAT32 format)

Reboot the computer and enter the BIOS/UEFI interface

Find the BIOS update function (often called "EZ Flash", "Q-Flash", "M-Flash" or similar)

Select the update file from the USB flash drive

Confirm the update and let the process finish

3. Updating using the manufacturer's one-click method

Some manufacturers (eg ASUS, MSI) offer simplified update tools

Download a special program from the manufacturer's website

Run a program that will automatically detect your model

Follow the program instructions to perform the update

After the update

Check if the update was successful - enter the BIOS interface and check if the newer version is now displayed

Reset the BIOS settings - often after an update, it returns to factory settings, so you may need to reconfigure some settings

Check system performance - make sure the computer is working stably after the update

What if the update failed?

BIOS recovery function - many modern motherboards have recovery functions (for example, BIOS Flashback or Q-Flash Plus) that allow you to restore a corrupted BIOS

CMOS reset - sometimes removing the CMOS battery (on desktop computers) or pressing a special CMOS reset button helps

Professional help - if the computer does not turn on after a failed update, it is best to consult a professional

If you are unsure about any of these steps, better consult an IT professional - when it comes to updating the BIOS, it's better to be safe than sorry.

Common BIOS update problems and how to avoid them

BIOS update is a delicate process that can cause various problems. By knowing the most common problems and how to solve them, you can avoid serious complications.

Most common problems:

Power failure during update Consequences: The computer may become bricked

Solution: Use an uninterruptible power supply (UPS) for desktop computers; make sure the laptop battery is fully charged and plugged in

Invalid BIOS file Consequences: Incompatibility, system instability

Solution: Always download BIOS files only from official manufacturer websites; double check the model number

Aborting the update process Consequences: Partially updated BIOS that will prevent the system from booting properly

Solution: Never abort the update process; close all other programs before starting

System does not start after update Consequences: Computer does not turn on or display no video

Solution: Try to reset CMOS (remove the battery on the desktop or use a special button); use BIOS recovery functions if your motherboard has them

Losing BIOS settings Consequences: You have to reconfigure all settings

Solution: Write down important settings or take screenshots before updating

How to avoid problems:

Prepare a recovery plan - familiarize yourself with your motherboard's BIOS recovery options before starting the update

Read the instructions carefully - each manufacturer may have unique update procedures

Don't update under extreme conditions - avoid updating BIOS during a storm or when the power supply is unstable

Consult professionals - if you are unsure about the process, it's better to seek help from IT professionals

Check system stability - solve any existing hardware problems before updating BIOS

Updating BIOS can be like a surgical operation on your computer - sometimes necessary, but always requires caution and proper preparation. Consistent stability on your computer is a sign that the system is working well, so don't replace something that isn't broken unless you have a specific goal or problem you're trying to solve.

FAQ (Frequently Asked Questions)

What is the BIOS and why might I need to update it?

BIOS is essential computer software; updates may be required to ensure hardware compatibility, fix bugs, or improve security.

How do I know if my BIOS needs to be updated?

Check your BIOS version (via System Info, at startup) and compare it to the latest version on the motherboard manufacturer's website.

Is BIOS update dangerous?

There is a risk if the process breaks or the wrong files are used; follow the instructions and use only official updates to minimize problems.

What to do if the BIOS update failed?

Try to reset the BIOS to default settings (CMOS cleaning), use the recovery function if possible, or contact specialists if the system does not boot.

Can updating BIOS improve computer speed?

Sometimes yes (especially if the update fixes bugs or enables new hardware), but for most users BIOS updates do not directly increase speed.