How Long Does BIOS Update Take? (2026 Complete Guide)
Last updated: July 19, 2026 | Estimated reading time: 12 minutes
Updating your motherboard’s BIOS is one of those maintenance tasks that many PC users put off because of uncertainty and fear. How long does it take? What if something goes wrong? Will my computer break? These are all valid concerns, but the reality is that BIOS updates are generally straightforward processes that take anywhere from 2 to 15 minutes depending on your motherboard manufacturer, the size of the update, and the method you use. In this comprehensive guide, we will walk you through exactly how long a BIOS update takes for different motherboard brands, provide a step-by-step walkthrough of the process, explain what can go wrong and how to recover, and share tips to ensure your update goes smoothly every time.
Table of Contents
- Typical BIOS Update Times by Brand
- Step-by-Step BIOS Update Guide
- What Can Go Wrong
- How to Recover from a Failed BIOS Update
- Common Mistakes to Avoid
- Frequently Asked Questions
- Conclusion
Typical BIOS Update Times by Brand
BIOS update times vary based on the motherboard manufacturer, the specific motherboard model, the size of the BIOS file, and the update method used. Here is a breakdown of typical update times for the major motherboard manufacturers.
| Manufacturer | Flash Time | Verification | First Boot After | Total Time | Update Method |
|---|---|---|---|---|---|
| ASUS | 1-3 min | 30-60 sec | 1-3 min | 3-7 min | EZ Flash (USB or Internet) |
| MSI | 1-2 min | 20-40 sec | 1-2 min | 2-5 min | M-FLASH (USB) |
| Gigabyte | 1-3 min | 30-60 sec | 1-3 min | 3-7 min | Q-Flash (USB or in-Windows) |
| ASRock | 1-2 min | 20-40 sec | 1-2 min | 2-5 min | Instant Flash (USB) |
| EVGA (Legacy) | 1-2 min | 20-40 sec | 1-2 min | 2-5 min | BIOS Flash |
Several factors influence the total update time. Larger BIOS files take longer to flash, and updates that include significant changes to the BIOS architecture may take longer than routine updates. Newer motherboards with BIOS Flashback features can sometimes update without a CPU installed, which adds a small amount of time but provides a valuable recovery option.
The first boot after a BIOS update is typically slower than normal because the system may need to reinitialize hardware, rebuild caches, and reconfigure settings. This is completely normal and can take anywhere from 30 seconds to 3 minutes depending on your hardware configuration. Subsequent boots will return to normal speeds.
It is also worth noting that some manufacturers include multiple update stages. For example, ASUS motherboards may first update the main BIOS, then update the ME (Management Engine) firmware, and finally update other embedded controllers. Each stage adds time to the overall process. If you want to learn about other system updates, see our guide on does overclocking void warranty.
Step-by-Step BIOS Update Guide
While the specific steps vary by manufacturer, here is a general process that applies to most modern motherboards. Always consult your motherboard manual for model-specific instructions.
Step 1: Download the Correct BIOS File
Visit your motherboard manufacturer’s support page and locate your exact model. Download the latest BIOS file and save it to a USB drive formatted as FAT32. Make sure you download the correct BIOS for your specific motherboard revision, as using the wrong BIOS can brick your motherboard. Extract the BIOS file if it comes in a ZIP archive.
Step 2: Prepare Your System
Before updating, close all running applications and disable any antivirus software temporarily, as these can interfere with the update process. If you are updating from within Windows (supported by some manufacturers), make sure your laptop is plugged into power or your desktop has a reliable power supply. A power loss during the update can be catastrophic.
Step 3: Enter BIOS/UEFI
Restart your computer and enter the BIOS/UEFI setup by pressing the appropriate key during boot (usually Delete, F2, or F12 depending on your motherboard). Some manufacturers also allow you to update directly from a boot menu without entering the full BIOS setup.
Step 4: Navigate to the Update Utility
Find the BIOS update utility in your BIOS menu. On ASUS boards, this is typically under “Tool > ASUS EZ Flash.” On MSI, look for “M-FLASH.” On Gigabyte, find “Q-Flash.” On ASRock, look for “Instant Flash.” The exact location varies by manufacturer and BIOS version.
Step 5: Select and Flash the Update
Navigate to your USB drive and select the BIOS file. Confirm the update when prompted. The flashing process will begin, and you will see a progress bar or indicator. Do not turn off your computer, reset, or press any buttons during this process. The typical flash time is 1-3 minutes as noted in the table above.
Step 6: Reboot and Configure
After the flash completes, your system will automatically restart. The first boot may take longer than usual as the system initializes with the new BIOS. You may need to re-enter the BIOS to reconfigure your settings, as a BIOS update typically resets all settings to defaults. This includes boot order, XMP/EXPO profiles, fan curves, and any custom overclocking settings.
Step 7: Verify the Update
Enter the BIOS again and verify that the version number matches the one you downloaded. Check that your settings are correct and that the system is operating normally. Run a stress test or play a game to ensure stability with the new BIOS.
What Can Go Wrong
While BIOS updates are generally safe when done correctly, there are several potential issues to be aware of.
Power Loss During Update: This is the most dangerous scenario. If your computer loses power during the BIOS flashing process, the BIOS chip may be left in an incomplete state, rendering the motherboard unable to boot. This is why it is critical to use a reliable power supply and, for laptops, ensure the battery is fully charged and the charger is connected. Always use a UPS (Uninterruptible Power Supply) for desktop BIOS updates if possible.
Wrong BIOS File: Using a BIOS file intended for a different motherboard model or revision can cause serious problems. Always verify that the BIOS file matches your exact motherboard model and revision number. Check the manufacturer’s website carefully, as some models have multiple revisions with different BIOS files.
Corrupted Download: If the BIOS file was corrupted during download, the flash process may fail or install a corrupted BIOS. Always verify the file hash if the manufacturer provides one, and re-download the file if you suspect corruption. Some manufacturers include built-in verification that checks the file integrity before flashing.
USB Drive Issues: Some USB drives are not compatible with motherboard BIOS flash utilities. If the utility cannot read your USB drive, try a different drive, preferably formatted as FAT32 with a single partition. Avoid USB 3.0 drives in USB 2.0 ports, and vice versa, as compatibility issues can arise.
Settings Compatibility: A new BIOS version may change how certain settings work or may not be compatible with your previous configuration. After updating, you may need to reconfigure settings differently than before. This is normal and expected, not a sign of a problem.
How to Recover from a Failed BIOS Update
Even with the best preparation, things can sometimes go wrong. Fortunately, most modern motherboards include recovery mechanisms that can help you recover from a failed BIOS update.
BIOS Flashback
Many modern motherboards include a BIOS Flashback feature that allows you to recover from a corrupted BIOS without a CPU, RAM, or graphics card installed. You only need the motherboard connected to power and a USB drive with the correct BIOS file. The specific procedure varies by manufacturer, but generally involves placing the BIOS file on a USB drive, renaming it to a specific filename, plugging it into a designated USB port, and pressing a Flashback button on the motherboard’s rear I/O panel. The LED indicator will blink during the process and stop when complete.
Dual BIOS Recovery
Some motherboards, particularly from Gigabyte and MSI, include dual BIOS chips. If the primary BIOS becomes corrupted, the motherboard can automatically switch to the backup BIOS, allowing you to boot and reflash the primary chip. Check if your motherboard has this feature, as it provides an excellent safety net for BIOS updates.
Clear CMOS
If a BIOS update results in an unstable configuration that prevents booting, clearing the CMOS can restore the BIOS to its default state. This is done by either shorting the CLR_CMOS jumper on the motherboard or removing the CMOS battery for a few minutes. Clearing CMOS does not help with a corrupted BIOS, but it can resolve issues caused by incompatible settings after a successful update.
Professional Recovery
In rare cases where all recovery methods fail, the BIOS chip may need to be physically replaced or reprogrammed using a specialized programmer. This is a last resort that typically requires professional service, but it is usually successful and much cheaper than replacing the entire motherboard.
If you are planning to modify your BIOS settings after updating, such as enabling PBO on AMD systems, check our guide on how to turn on PBO for detailed instructions. You may also want to verify RAM compatibility with your motherboard after a BIOS update.
Common Mistakes to Avoid
Avoiding these common mistakes will help ensure your BIOS update goes smoothly every time.
Mistake 1: Updating Without Reason. If your system is stable and running well, there is no need to update the BIOS just because a newer version exists. Only update when the new version addresses a specific issue you are experiencing, adds support for new hardware you plan to use, or includes security patches you need. Unnecessary updates carry unnecessary risk.
Mistake 2: Ignoring Version Differences. Always check the BIOS changelog to understand what changes are included in the update. Some updates are minor bug fixes, while others include significant changes that may affect system behavior. Understanding the changes helps you prepare for any configuration adjustments that may be needed.
Mistake 3: Skipping Backup Steps. Before updating, save your current BIOS settings (take photos of each screen), back up important data, and create a recovery USB drive. While BIOS updates rarely affect data on your drives, being prepared is always wise. Having your current settings documented makes post-update reconfiguration much faster.
Mistake 4: Using Unreliable Power. Never update your BIOS during a thunderstorm or when your power supply is unreliable. Use a UPS for desktops and ensure laptops are fully charged with the charger connected. Even a brief power interruption during the flash process can result in a corrupted BIOS.
Mistake 5: Interrupting the Process. Do not turn off, reset, or interact with your computer during the BIOS flashing process, even if it appears to be stuck. Some BIOS updates take longer than expected, and interrupting the process can corrupt the BIOS. Be patient and let the process complete fully.
Mistake 6: Forgetting to Reconfigure. After a BIOS update, your settings are reset to defaults. Remember to re-enable XMP/EXPO for your RAM, reconfigure your boot order, restore fan curves, and reapply any custom overclocking settings. Running with default settings after an update may not provide the performance you expect.
Frequently Asked Questions
How long does a BIOS update actually take?
The actual flashing process typically takes 1-3 minutes, with the total process including preparation and first reboot taking 5-10 minutes. The first boot after a BIOS update may be slower than normal, taking up to 3 minutes as the system initializes with the new firmware. Subsequent boots will return to normal speeds.
Can a BIOS update fail?
While rare with proper procedure, BIOS updates can fail due to power loss, corrupted files, or incompatible hardware. Modern motherboards include recovery features like BIOS Flashback and dual BIOS to help recover from failed updates. Following the recommended procedure and using reliable power significantly reduces the risk of failure.
Should I update my BIOS if everything is working fine?
If your system is stable and you are not experiencing any issues, there is generally no need to update the BIOS. Only update when the new version addresses a specific problem, adds support for new hardware you plan to use, or includes important security patches. Unnecessary updates carry unnecessary risk, however small.
Will a BIOS update erase my data?
No, a BIOS update does not affect the data on your storage drives. However, it does reset BIOS settings to defaults, which may affect boot order and other system configurations. You will need to reconfigure your BIOS settings after the update, but your files, applications, and operating system will remain intact.
Can I use my computer during a BIOS update?
No, you should not use your computer during a BIOS update. The BIOS flash process requires exclusive access to the BIOS chip, and any system activity during the update could cause conflicts or corruption. Close all applications and avoid any interaction with the system until the update is complete and the system has rebooted.
What is BIOS Flashback and do I need it?
BIOS Flashback is a recovery feature that allows you to update or recover a corrupted BIOS without a CPU, RAM, or GPU installed. You only need the motherboard connected to power and a USB drive with the BIOS file. While you do not strictly need it for routine updates, it provides a valuable safety net that can save your motherboard from a catastrophic BIOS failure.
How do I know which BIOS version I have?
You can check your current BIOS version by entering the BIOS setup (usually by pressing Delete or F2 during boot) and looking at the main information screen. In Windows, you can also check by opening System Information (msinfo32) and looking for “BIOS Version/Date” in the System Summary.
Is it safe to update BIOS over the internet?
Some manufacturers like ASUS offer internet-based BIOS updates through their BIOS utilities. This is generally safe as the utility handles the download and verification process. However, updating from a USB drive that you have prepared manually gives you more control and is considered slightly safer since you can verify the file before flashing.
Conclusion
Updating your BIOS is a straightforward maintenance task that typically takes less than 10 minutes from start to finish. While the process can seem intimidating, modern motherboards have made it safer and easier than ever, with built-in verification, recovery features, and user-friendly utilities. The key is to follow the proper procedure: download the correct file, use reliable power, do not interrupt the process, and be prepared to reconfigure your settings afterward.
Understanding the typical update times for your specific motherboard manufacturer helps set proper expectations and prevents premature panic during the process. Whether you are using an ASUS, MSI, Gigabyte, or ASRock motherboard, the update process follows a similar pattern with brand-specific variations in the utility interface and naming conventions.
Remember to only update your BIOS when there is a compelling reason to do so, whether that is fixing a specific issue, adding hardware support, or addressing security vulnerabilities. With proper preparation and the recovery tools available on modern motherboards, BIOS updates are a safe and routine part of PC maintenance that can keep your system running smoothly and securely.
