What Is a BIOS Update and When Do You Need One for Upgrades?

BIOS updates are one of the most misunderstood aspects of laptop upgrades. Many people wonder whether they need to update their BIOS before installing new RAM or an SSD, and the answer isn’t always straightforward. Some upgrades require a BIOS update; others don’t. This guide cuts through the confusion and shows you exactly when you need one, how to check your current version, and how to update safely without bricking your machine.

Whether you’re upgrading to DDR5 RAM, installing a new NVMe SSD, or swapping in a modern CPU, understanding BIOS updates will help you avoid compatibility issues, unlock performance features, and keep your laptop running smoothly.

What Is BIOS and Why Does It Matter for Upgrades?

BIOS stands for Basic Input/Output System. It’s the firmware that runs before your operating system boots. Think of it as the bridge between your hardware (RAM, CPU, SSD, peripherals) and Windows or macOS. When you power on your laptop, the BIOS initialises every component, checks for errors, and configures settings before handing control to your OS.

For upgrades, the BIOS is critical because it contains hardware recognition tables and microcode. When you install new RAM or an SSD, the BIOS needs to recognise and initialise that component. If your BIOS doesn’t have support for your new hardware, it won’t work—even if the hardware is compatible with your laptop’s motherboard.

Modern laptops use UEFI (Unified Extensible Firmware Interface), which is the newer standard that replaced the older BIOS. However, nearly everyone still calls it “BIOS” out of habit, so don’t worry about the terminology. When we say “BIOS update,” we’re talking about updating your firmware whether it’s called BIOS or UEFI.

BIOS vs UEFI: What’s the Difference?

If you’ve read about BIOS and UEFI and wondered whether they’re different things, here’s the practical answer: they serve the same purpose, but UEFI is the modern standard.

BIOS (Legacy BIOS) was the original firmware standard used on laptops until the mid-2010s. It had limitations—small boot partitions, no native support for large drives, and a text-based interface. UEFI improved all of this with a graphical interface, better security (Secure Boot), and support for modern hardware.

Your laptop almost certainly uses UEFI if it was made after 2015. Both terms refer to the same firmware layer, and updates work the same way. For this guide, “BIOS update” and “UEFI update” mean the same thing.

When Do You Actually Need a BIOS Update for Upgrades?

This is the question that matters most. Let’s break down the specific scenarios:

1. New RAM Not Recognised (Full Capacity)

If you install new RAM and your system shows less capacity than installed (e.g., 16GB installed but only 8GB detected), a BIOS update often fixes this. Manufacturers release BIOS updates to support higher-capacity modules. Check your RAM compatibility against your exact laptop model—if your new RAM is listed as compatible, check the BIOS date on the manufacturer’s specification page.

2. DDR5 Upgrade on an Older System

If your laptop supports DDR5 but shipped with DDR4, a BIOS update is almost always required. Manufacturers need to add DDR5 microcode and voltage profiles to recognise and configure DDR5 modules correctly. Check your laptop’s support page for a BIOS update released around the time DDR5 support was added.

3. New SSD Not Detected

This is rarer, but older BIOS versions sometimes don’t support newer NVMe protocol versions or high-capacity drives. If your new SSD isn’t detected, update your BIOS first—it costs nothing and often solves the problem.

4. CPU Upgrade or Swap

If you’re swapping to a newer CPU (even within the same socket), a BIOS update is usually required. The BIOS contains a microcode table that tells your laptop how to manage each CPU model. Newer CPUs require updated microcode. Manufacturers release BIOS updates alongside new CPU releases for exactly this reason.

5. Performance Features Not Available

Features like XMP/EXPO RAM profiles, resizable BAR (for graphics), or enhanced Secure Boot are often locked behind BIOS versions. If your specs support a feature but it’s not showing in BIOS settings, update and it may unlock.

6. Replacing Like-for-Like Components

If you’re upgrading your existing DDR4 to faster DDR4, or replacing one Samsung SSD with another, you almost never need a BIOS update. Your BIOS already recognises that component type.

How to Check Your Current BIOS Version

Before you decide whether to update, check what version you’re running:

On Windows

Method 1: System Information

1. Press Win + R, type msinfo32, and press Enter
2. Look for “BIOS Version/Date” in the System Information window
3. Note both the version number and the date

Method 2: Command Prompt

1. Press Win + R, type cmd, and press Enter
2. Type wmic bios get smbiosbiosversion and press Enter
3. Your BIOS version appears in the output

Method 3: BIOS Setup Screen

1. Restart your laptop and repeatedly press the BIOS key (usually F2, F10, Del, or Esc—depends on manufacturer)
2. Look at the first screen; BIOS version and date are typically displayed in the top-right corner
3. Exit by pressing Esc (don’t change anything)

On macOS

Apple’s firmware updates happen automatically through Software Update. To check:

1. Click the Apple menu → About This Mac
2. Look for “System Firmware” version
3. Updates arrive through System Preferences → General → Software Update

Where to Find BIOS Updates by Manufacturer

Each laptop brand hosts BIOS updates on its own support website. Here’s where to look:

The safest approach: Use your manufacturer’s automatic update tool (SupportAssist, Lenovo Vantage, etc.). These tools verify your exact model, download the correct BIOS file, and prevent errors.

Step-by-Step: How to Update BIOS Safely

BIOS updates are low-risk if you follow these steps. Modern recovery methods mean a failed update rarely bricks your laptop permanently.

Before You Update

1. Charge your laptop to 100%. Never update on battery. If your laptop battery is degraded, plug in the power adapter and wait until fully charged.
2. Close all programs. Save and close everything except your BIOS update tool.
3. Disable antivirus temporarily. Some antivirus software blocks BIOS updates. Disable it, run the update, then re-enable.
4. Download the correct file. Go to your manufacturer’s site, enter your exact laptop model number (usually on a sticker on the bottom), and download the BIOS file that matches.
5. Verify the file. Check that the downloaded file is the right version for your exact model. A BIOS for a Dell Inspiron 15 5000 won’t work on an Inspiron 15 3000.

During the Update

Using your manufacturer’s automatic tool (recommended):

1. Open SupportAssist, Lenovo Vantage, HP Support Assistant, or MyASUS.
2. The tool scans your system and shows available updates, including BIOS.
3. Click “Update” or “Install” and follow the prompts.
4. Your laptop will restart and complete the update automatically.
5. Don’t interrupt the process—leave it plugged in and don’t close the lid.

Using the BIOS FlashBack method (if using manual files):

1. Copy the BIOS file to a USB flash drive (format it as FAT32 first).
2. Restart your laptop and enter BIOS setup (press F2 or your manufacturer’s key).
3. Look for “BIOS FlashBack,” “EZ Flash,” or similar in the menu.
4. Select the BIOS file from the USB drive.
5. Confirm the update. The process takes 2–5 minutes. Don’t power off.
6. Your laptop restarts automatically when finished.

After the Update

1. Let your laptop boot normally—don’t force it off.
2. Verify the BIOS version has changed (check msinfo32 again).
3. If you made custom BIOS settings before the update, you may need to reconfigure them (BIOS updates sometimes reset settings to defaults).
4. Check your new hardware is now recognised (RAM capacity, SSD, etc.).
5. Re-enable your antivirus software.

Can a BIOS Update Brick Your Laptop?

Yes, a BIOS update can theoretically brick your laptop—but modern recovery makes this extremely unlikely. Here’s the reality:

Outdated risk: On older laptops (pre-2010), interrupting a BIOS update mid-process could make the device permanently unbootable. You’d need professional recovery.

Modern protection: Laptops made in the last 15 years have built-in recovery mechanisms like BIOS FlashBack, which let you recover from a failed update using just a USB drive and the manufacturer’s recovery BIOS file. Dell, Lenovo, HP, and ASUS all provide these tools.

Real risk factors:

• Power loss during update — This is the main risk. Always update while plugged in and fully charged.
• Interrupted update — Don’t force shut down or close the lid mid-update.
• Wrong BIOS file — Installing a BIOS file meant for a different model can cause issues, but won’t permanently brick modern laptops.

Bottom line: Follow the steps above (charge fully, don’t interrupt, use automatic tools), and the risk of permanent bricking is near zero. If an update fails, your laptop’s recovery BIOS kicks in and lets you try again.

BIOS Settings That Affect Upgrades

Once you’ve updated your BIOS, a few settings influence how your new hardware performs:

XMP/EXPO: If you installed high-speed RAM, enabling XMP (Intel) or EXPO (AMD) in BIOS unlocks that speed. Without it, your RAM runs at standard JEDEC speeds, slower than it could go.

Boot Order: After installing a new SSD, make sure it’s set as the first boot device in BIOS, or your laptop won’t boot from it.

Secure Boot: Windows 11 prefers Secure Boot enabled. If you installed a new drive and Windows won’t install, check BIOS and enable Secure Boot.

NVMe Mode: Some older BIOS versions have a setting to switch between NVMe and AHCI (SATA) mode. NVMe drives need NVMe mode enabled. Modern BIOS does this automatically.

TPM 2.0: Windows 11 requires TPM 2.0. If you’re upgrading to Windows 11 on an older laptop, you may need to enable TPM 2.0 in BIOS (it’s often disabled by default on older systems).

How Often Should You Update BIOS?

You don’t need to update BIOS regularly just for the sake of it. Update only when:

• You’re upgrading hardware and the new hardware isn’t recognised.
• A critical security vulnerability is announced (rare but important).
• Your manufacturer specifically recommends it for your use case.
• You want to unlock a new performance feature.

Frequent BIOS updates are unnecessary and carry minimal benefit if your system is stable. A BIOS version from 2 years ago is fine if it supports your hardware.

Recommended Products for Safe BIOS Updates

You don’t need much to update BIOS safely. Here’s what we recommend:

Prices and availability may vary. As an Amazon Associate, we earn from qualifying purchases.

Frequently Asked Questions

Can a BIOS update brick my laptop?

Modern laptops have recovery mechanisms that prevent permanent bricking. A failed BIOS update on a current-generation laptop can almost always be recovered using BIOS FlashBack (a recovery tool built into the firmware). However, interrupting a BIOS update due to power loss is dangerous, so always update while fully charged and plugged in.

Do I need to update BIOS before installing new RAM?

Not always. If your new RAM is the same DDR generation (e.g., DDR4 to DDR4), you almost never need a BIOS update. However, if you’re upgrading to DDR5, a newer memory capacity, or faster speeds, check your manufacturer’s specifications. If a BIOS update is listed for RAM support, install it first.

How often should I update my BIOS?

Only when necessary. Update if you’re adding new hardware that isn’t recognised, if a critical security patch is released, or if your manufacturer explicitly recommends it. Routine updates aren’t required unless you’re chasing performance improvements or new features.

Can I downgrade my BIOS to an older version?

Technically yes, but it’s not recommended. Manufacturers don’t support downgrades, and you risk losing bug fixes and security patches. If a newer BIOS causes problems, contact the manufacturer’s support team for help—don’t downgrade on your own.

What if my BIOS update fails?

Modern laptops have recovery BIOS built into the firmware. Restart your laptop and look for a “BIOS Recovery” or “BIOS FlashBack” option in the boot menu. Use a USB drive with the correct BIOS file to recover. If this doesn’t work, contact your manufacturer’s support team.

Will updating BIOS erase my data?

No. A BIOS update only modifies the firmware; it doesn’t touch your data, operating system, or installed applications. Your data is completely safe.

Is it safe to update BIOS remotely or on a VPN?

Yes, it’s safe to download the BIOS file remotely or over a VPN. However, perform the actual update locally with a stable power source. Don’t update while travelling or on an unreliable connection.

Related Guides

• How to Check Your Laptop Specs (CPU, RAM, SSD)
• Laptop RAM Compatibility Guide (DDR4, DDR5, LPDDR5)
• Laptop SSD Compatibility Guide (NVMe, SATA, M.2 Sizes)
• How to Upgrade Laptop RAM (Step-by-Step)
• How to Upgrade Laptop SSD (Step-by-Step)