How To Identify BIOS Chip On Motherboard

This guide provides simple methods to locate and identify the BIOS chip on your motherboard. You usually begin with a visual inspection to identify the BIOS chip on your motherboard. Most chips are marked with labels that indicate their purpose. By following these steps, you can confidently pinpoint the location of the BIOS chip and carry out the necessary actions to maintain or rectify any issues relating to the chip or the settings it contains.

Quick Answer

The BIOS chip is often located near the PCIe slots, the CMOS battery, or along the bottom-right edge of the motherboard. 

What Is a BIOS Chip?

A BIOS (Basic Input/Output System) chip is a critical component of a computer’s motherboard that stores the essential firmware used by the system during the startup process. Before loading the operating system, this firmware initializes and tests the hardware components, such as the CPU, RAM, and input/output devices.

As an integral part of the motherboard, the BIOS chip ensures a smooth and efficient boot-up sequence to provide a stable platform for the computer’s operation. More importantly, it is an intermediary between the hardware and software, allowing them to work together seamlessly.

Modern motherboards may use UEFI (Unified Extensible Firmware Interface) as a replacement for traditional BIOS, offering enhanced performance and security features. However, “BIOS” is still widely used to describe the firmware stored on these chips.

BIOS chips are usually small, square, or rectangular integrated circuits (ICs) attached to the motherboard. 

BIOS Chip vs. UEFI

The BIOS (Basic Input/Output System) and UEFI (Unified Extensible Firmware Interface) are firmware interfaces that act as an intermediary between a computer’s hardware and operating system during the boot process. Both perform a similar function, but their architecture and capabilities differ significantly.

The traditional BIOS has been around for decades and is in most PCs. It is stored in a chip on the motherboard and initializes hardware components during startup. The BIOS chip is usually located below the CPU socket or on the bottom-right edge of the motherboard. 

On the other hand, UEFI is a more modern firmware interface that addresses some of the limitations of BIOS. It can run in either 32-bit or 64-bit mode, allowing for faster boot times and more addressable address space than BIOS. In addition, UEFI often features more user-friendly setup screens, offering graphics and mouse cursor support. However, this is not a mandatory feature for UEFI.

Differences between BIOS and UEFI include:


BIOS is 16-bit, while UEFI is 32-bit or 64-bit.

Boot speed

UEFI typically offers faster boot times as it initializes hardware components more efficiently.


BIOS can only boot from MBR partitioned disks, while UEFI supports both MBR and GPT partitions.

User interface

UEFI often provides mouse-support graphical setup screens, whereas BIOS uses text-based interfaces.

Locating the BIOS Chip on Your Motherboard

Tools and Precautions

Before you begin, gather the necessary tools, such as a magnifying glass and a flashlight, to help you better inspect the motherboard. Ensure that you take appropriate safety precautions to prevent damage to your computer components, such as disconnecting the power supply, grounding yourself to avoid electrostatic discharge, and carefully removing any cables or parts obstructing your view of the motherboard.

Typical BIOS Chip Locations

While there isn’t a standard location for BIOS chips, there are some common areas where they can be found. The BIOS chip is often located near the PCIe slots, the CMOS battery, or along the bottom-right edge of the motherboard. 

Examining your motherboard’s layout and referring to the instructions manual with your computer or laptop can help you locate the BIOS chip more easily.

BIOS Chip Physical Features

The BIOS chip is small, square, and labeled with the manufacturer’s logo. To further assist in the identification, you can check the motherboard drivers where the BIOS chip is listed as a component. 

Identifying BIOS Chip Manufacturers

The BIOS chip is a crucial component of the motherboard, and identifying the manufacturer is helpful when troubleshooting or performing maintenance on your computer. This section will discuss various ways to identify your BIOS chip manufacturer, which will help identify the chip on the motherboard.

Inspecting the chip closely will often reveal the manufacturer’s name and other details inscribed on the chip’s surface. You may use a magnifying glass for better visibility.

Consult Your Motherboards Manual

Another approach is to refer to your specific motherboard’s user manual, which can guide locating the BIOS chip. Alternatively, it may be possible to glean this information from the manufacturer’s website or support resources.

Updating or Replacing Your BIOS Chip

This section will discuss how to update or replace a BIOS chip on your motherboard. We’ll cover two main subtopics: the BIOS update process and replacing a faulty BIOS chip.

BIOS Update Process

Updating your system’s BIOS can improve performance, stability, and compatibility with newer hardware. Before carrying out an update, identify the BIOS chip on your motherboard via the ways I described above. 

Once you have located the chip, follow these steps:

  • Visit the motherboard manufacturer’s website and find the support page for your specific model.
  • Download the latest BIOS update package.
  • Extract the files and follow the instructions provided by the manufacturer.
  • When prompted, restart your computer for the update process to complete.

Always ensure you’re using the correct BIOS update and follow the guidelines provided by the manufacturer carefully to avoid damaging your system.

Replacing a Faulty BIOS Chip

Sometimes, the BIOS chip may become faulty or corrupted, necessitating replacement. To replace a faulty BIOS chip, follow these steps:

  • Turn off your computer and disconnect all cables.
  • Open the computer case and locate the BIOS chip on your motherboard by visually inspecting it.
  • Purchase a new BIOS chip compatible with your motherboard.
  • Using proper tools and techniques, carefully remove the old BIOS chip.
  • Insert the new BIOS chip into the appropriate socket and secure it.
  • Reassemble your computer and power it on.

Replacing a BIOS chip can be a delicate process, and it is recommended only for experienced users with the necessary skills and tools. If you’re unsure about your ability to perform this task, consider consulting a professional technician for help.


Understanding the location and function of your BIOS chip is crucial for troubleshooting issues and performing updates if necessary. Using these methods, you can effectively locate the chip and ensure your system remains stable and up-to-date.