Easy Guide to Updating the BIOS on a Computer (Windows)

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Step-by-step guide to identifying and updating your PC’s BIOS

Co-authored by Mobile Kangaroo and Megaera Lorenz, PhD

Last Updated: March 28, 2024 Fact Checked

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Downloading the BIOS Update File

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Updating Your BIOS

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Q&A

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Tips

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Warnings

This wikiHow teaches you how to update the BIOS (Basic Input Output System) firmware for a Windows computer. Keep in mind that your BIOS rarely needs updating, and updating the BIOS incorrectly can render your computer completely inoperable. If you’re running Windows 10 or 11, your computer may update your BIOS automatically. Mac computers typically use a different type of firmware that automatically updates when you update your operating system.

How to Install a BIOS Update

Before downloading an update, use the System Information utility to search for your system model and current BIOS or UEFI version.
Search for your manufacturer’s support site by typing your computer model into Google and “BIOS” or “drivers.”
Select “Updates,” “Support,” or “Downloads” on the manufacturer’s site to download. Extract the BIOS file to update.

Part 1

Part 1 of 2:

Downloading the BIOS Update File

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1
Open Start
. Click the Windows logo in the bottom-left corner of the screen.
- You can also press the ⊞ Win key to access the Start menu.
Type msinfo into the Start window, then click System Information at the top of the Start window.

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In the System Information app, click the System Summary header on the left side of the window.
4
Check your computer's model name. Next to the "System Model" heading, you'll see a list of numbers and letters; this is your computer's model name. You'll need this information when you search for the BIOS update file.
- Skip this step if you have a custom-built computer.
5
Find your BIOS version number. Scroll down in the menu. Next to the "BIOS Version/Date" heading, you'll see a company name, your computer's model name, and a number after a period. The number after the period is your BIOS version.
- For a computer with the model number "Q553UB" and a BIOS set to version 202, for example, you would see "Q553UB.202" here.
- If you're using a custom-built computer, you'll need to find your motherboard's model instead of using the computer's model number.
- You can also find the BIOS with the command prompt by typing in the command wmic bios get biosversion.
A few lines under the BIOS Version/Date header, check the BIOS Mode line. This will tell you whether you have a true BIOS or a UEFI.
7
Open your BIOS manufacturer's support site. Generally, the easiest way to do this is by typing your computer's manufacturer name, your computer's model name, and "drivers" or "BIOS" into Google and then selecting the proper link. This process will vary depending on your computer's manufacturer, so you may have to click through a few different links before you find the correct one.
- If you're using a custom-built computer, you'll need to look up your computer's motherboard name along with "BIOS" or "UEFI" and "update" and then open the manufacturer's website.
8
Find the BIOS update file. Depending on the website, you may have to open the "Updates", "Support", or "Downloads" section first, or click a "BIOS" heading. Once you've found the BIOS file, you can proceed.
- Again, this may involve some trial and error.
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Is it safe to update the BIOS in Windows? Joseph Alexander, a computer repair technician, explains: "It is typically safe to update your BIOS as long as you source the BIOS update directly from the device manufacturer. Make sure you follow their instructions carefully."
9
Make sure the update file is newer than your BIOS version. In the file's name, you should see a version number. If this version number is higher than your BIOS version number, your BIOS is outdated and thus can be updated.
- If the version number on the website matches your BIOS version number, your BIOS is up-to-date and does not need updating.
- Even if your current BIOS version is a whole number (e.g., 301) and the file on the site is listed as a higher decimal (e.g., 301.1), the site's file is a higher version than your BIOS uses.
10
Download the update file. Click the Download link, button, or icon to do so. Once your BIOS update file finishes downloading, you can proceed with updating your BIOS.
- In some cases, you may have to click the file's name to prompt it to download.
- Most BIOS update files will download inside of a ZIP folder.

Part 2

Part 2 of 2:

Updating Your BIOS

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1
Make sure your computer is plugged into a reliable power source. Since you can permanently ruin your BIOS if your computer turns itself off during the update process, you'll want to use a reliable power source.
- If you're using a laptop, your computer's battery should be fully charged in addition to the laptop being plugged in.
2
Extract your BIOS file. In most cases, you'll have to extract (or "unzip") the BIOS update file from within its folder:
- Double-click the downloaded ZIP file to open it.
- Click the Extract tab at the top of the window.
- Click Extract all.
- Click Extract when prompted.
- Wait for the extracted folder to open.
3
Read your BIOS file's README document if applicable. If a text document labeled "README" or similar is available, double-click it to open it and read the entire document before proceeding.
- If the README file's instructions for updating your BIOS contradict the instructions in the rest of this article, make sure you follow the README's instructions instead.
- For some older or custom-made computers, you may need to run the BIOS installer from a USB flash drive instead of directly from the computer’s hard drive. However, this isn’t necessary for most modern PCs. Check the README file to be sure.
4
Access the BIOS page. Prompt your computer to restart by clicking Start
, clicking Power
, and clicking Restart, then immediately begin pressing the key your computer's manufacturer assigned to the BIOS startup. If the BIOS doesn't launch, you'll need to restart again and try a different key.
- For most computers, this key is one of the function keys (e.g., F12), though some computers use the Del key or the Esc key.
- If you don't know your computer's BIOS key, look it up by typing your computer's manufacturer name, model name, and "BIOS key" into a search engine.
- In Windows 10 or 11, you can also access the BIOS settings from the Settings menu. From Settings, navigate to Update & Security > Recovery > Restart Now (under Advanced startup). In the window that pops up, select Troubleshoot > Advanced options > UEFI Firmware Settings > Restart.
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Back up your BIOS if possible. If you see a "Backup" or "Save" option on the BIOS' main screen (or if you see a Backup tab at the top of the screen), select it and follow any on-screen instructions. This will ensure that you can restore your BIOS settings later if your BIOS update doesn't pair well with your computer.
- You may instead be prompted to back up your BIOS once you initiate the backup process.
- Not all BIOS pages allow you to back up their settings.
6
Enable and use your BIOS update tool. Each BIOS will have a slightly different way of accessing the BIOS update tool, so you may have to consult your BIOS manufacturer's support site for a direct explanation of how to do so.
- In many cases, you'll select the Boot tab, ensure that your USB flash drive shows up, enable any backup or "Flash" options in the menu, and then select the Start Flash option from the Advanced tab.^{[1]
  X
  Research source}
- Sometimes, pressing the BIOS key while a USB drive is plugged in will bring up a unique menu that allows you to select an Update option and follow the on-screen instructions. This is common on Dell computers.^{[2]
  X
  Research source}
7
Allow your computer's BIOS to update. This process can take a few minutes to over an hour depending on your computer and the depth of the BIOS update. Once your BIOS is finished updating, your computer should restart itself, though you may be prompted to confirm this decision.
- Do not turn off your computer while the BIOS is updating. Doing so can cause the BIOS to become corrupted, meaning that your computer will be unable to start, complete the BIOS installation, or otherwise run at all.

Community Q&A

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Question

Should I download the higher version number of the bios or current version number from the motherboard website?

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Staff Answer
This answer was written by one of our trained team of researchers who validated it for accuracy and comprehensiveness.

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Staff Answer

To update the BIOS, you will need to download the higher version number. Otherwise, you'll be reinstalling the same version that is already installed.

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My computer was updating the BIOS automatically. Power went off and I cannot boot my computer. How can it be repaired?

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This answer was written by one of our trained team of researchers who validated it for accuracy and comprehensiveness.

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Staff Answer

If your computer only has a single BIOS, unfortunately, you may need to buy a replacement in order to get your computer working again. If your computer has dual BIOS support, you may be able to start up from the alternate BIOS (e.g., by pressing Del and then F8 during startup to enter Dual BIOS mode).

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How do I reset my BIOS?

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Resetting your BIOS can usually be accomplished within the BIOS itself or through the hardware by removing the CMOS battery or resetting a jumper on your motherboard.

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Tips

Evaluate whether an update is really necessary before you start. Since updating your BIOS or UEFI is potentially risky, don’t do it unless you have a good reason. There are a few possible reasons you might want to update your computer’s firmware:
- Your system keeps crashing due to a problem with the motherboard.
- Your old BIOS or UEFI is not compatible with some new hardware you’d like to install, such as a graphics card or added memory.
- Your old BIOS or UEFI is vulnerable to security issues.
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If you’re using a PC that’s running Windows 10 or 11, your computer’s manufacturer may prompt you to update the BIOS through Windows Update. If this is the case, you won’t need to download or install anything separately—simply check for updates or set your PC to update automatically.

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BIOS updates may be released to fix existing bugs, add support for new hardware and standards, or add functionality. If they're available, read the release notes or other documentation for the BIOS update you're considering to see if the update will benefit your PC.

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Warnings

Avoid updating the BIOS unless you know exactly what you are doing. Failure to follow a manufacturer's directions and precautions may corrupt the BIOS as well.

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Never download BIOS updates from anywhere other than the manufacturer's website, as BIOS updates can be used to traffic malware.

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