How to Disable Secure Boot in Windows 10: Step-by-Step Guide

If you’ve ever tried to install another operating system, use certain graphics cards, or boot from external media and got stuck because of Secure Boot, you’re not alone. This feature is designed to protect your PC from unauthorized software, but sometimes, it can get in the way. In this guide, we’ll walk you through how to disable Secure Boot in Windows 10—safely and step-by-step.

Table of Contents

What Is Secure Boot?

Secure Boot is a security feature built into most modern computers with UEFI firmware. It prevents malicious software or unauthorized operating systems from loading during the startup process. Think of it as a digital bouncer for your PC—it checks everything trying to load at boot time and only lets the trusted ones through.

Why You Might Need to Disable Secure Boot

While Secure Boot is great for security, it can sometimes limit flexibility. Here are some common reasons you might want to turn it off:

Installing Linux or another OS that isn’t signed by Microsoft.
Using older hardware or drivers that don’t support Secure Boot.
Booting from recovery tools or external drives.
Running certain virtualization software that requires unsigned drivers.

In short, if Secure Boot prevents you from doing what you need, disabling it (temporarily or permanently) might be the solution.

Before You Begin: A Few Important Notes

Before diving in, here are a few key things to know:

Backup your data – Always a good idea before changing firmware settings.
Know your BIOS/UEFI key – This is usually one of the following: F2, Del, Esc, or F10.
You may need an administrator account – Make sure you have the right permissions.
Disabling Secure Boot may reduce security – Be cautious if you don’t fully understand the implications.

Step-by-Step Guide to Disable Secure Boot in Windows 10

Let’s get into the meat of it. Follow these steps carefully.

Step 1: Access the UEFI Firmware Settings

There are two main ways to access the UEFI (BIOS) menu: directly at startup or through Windows settings.

Option 1: Using Windows Settings

Press Windows + I to open Settings.
Navigate to Update & Security → Recovery.
Under Advanced startup, click Restart now.
Your PC will reboot and show a blue screen with options.
Select Troubleshoot → Advanced options → UEFI Firmware Settings.
Click Restart to enter your BIOS/UEFI.

Option 2: Using Startup Key

Restart your computer.
As soon as the manufacturer logo appears, press the BIOS key (usually F2, F10, or Del).
This will take you into the BIOS/UEFI interface.

Step 2: Locate the Secure Boot Option

Once inside the UEFI interface, things can look a little different depending on your PC brand. However, most follow a similar layout.

Use the arrow keys or mouse to navigate to the Boot, Security, or Authentication tab.
Look for an option called Secure Boot.

Tip: If you can’t find it, check your motherboard’s manual or manufacturer’s website for guidance.

Step 3: Disable Secure Boot

Highlight Secure Boot and press Enter.
Change the value to Disabled.
You might be asked to confirm or enter an admin password. If so, follow the prompts.

That’s it! Secure Boot is now disabled.

Step 4: Save and Exit the BIOS

Press F10 or select Save & Exit from the menu.
Choose Yes to confirm.
Your computer will restart automatically.

After rebooting, Secure Boot should be turned off.

How to Verify That Secure Boot Is Disabled

Not sure if it worked? Here’s how to check within Windows 10.

Press Windows + R to open the Run dialog.
Type msinfo32 and hit Enter.
In the System Information window, find Secure Boot State.
It should now say Off or Disabled.

How to Re-Enable Secure Boot (If Needed)

If you ever need to turn Secure Boot back on, the process is just as simple:

Restart your PC and enter the UEFI/BIOS again.
Navigate back to the Secure Boot option.
Change it from Disabled to Enabled.
Save and exit using F10.

This can be helpful if you want to restore your system’s full security after completing your tasks.

Troubleshooting Common Issues

Sometimes disabling Secure Boot doesn’t go smoothly. Let’s look at a few possible issues.

Issue 1: Secure Boot Option Is Greyed Out

If you can’t change the setting:

Set the Administrator or Supervisor Password in BIOS.
Change Boot Mode to UEFI instead of Legacy.
Save changes and restart—this often unlocks the option.

Issue 2: System Doesn’t Boot After Disabling

If your system fails to boot:

Enter BIOS again and make sure Boot Mode is set correctly.
Try enabling CSM (Compatibility Support Module) if available.
Restore Secure Boot if nothing else works.

Issue 3: Missing BIOS Option

Some manufacturers hide Secure Boot behind submenus. Check under:

Advanced → Boot Configuration
Security → Secure Boot Control
Authentication → Secure Boot Mode

Brands and Their BIOS Keys

Here’s a quick reference table to help you access BIOS on popular brands:

Manufacturer	BIOS/UEFI Key
Dell	F2
HP	Esc or F10
Lenovo	F1 or F2
ASUS	Del or F2
Acer	F2
MSI	Del
Toshiba	F2 or F12

Understanding the Risks of Disabling Secure Boot

While disabling Secure Boot gives you flexibility, it also has downsides:

Your PC becomes more vulnerable to boot-level malware.
Unverified software can run without checks.
It might affect BitLocker encryption if enabled.

Always re-enable Secure Boot once you’ve finished installing or testing what you need.

When You Shouldn’t Disable Secure Boot

Avoid turning off Secure Boot if:

You mainly use your PC for everyday tasks and browsing.
You’re unsure about BIOS settings.
You don’t need to install an unsigned OS or driver.

In these cases, keeping Secure Boot enabled is the smarter and safer choice.

Alternative: Temporarily Boot Without Disabling Secure Boot

Some advanced users can boot unsigned OSs temporarily by:

Using a custom boot manager like Shim or GRUB2 (for Linux).
Creating a signed bootloader compatible with Secure Boot.

This is more complex, but it avoids fully turning the feature off.

Final Thoughts

Disabling Secure Boot in Windows 10 isn’t difficult—it just requires a bit of patience and careful navigation through the BIOS. It’s a powerful way to unlock new options for dual-boot setups, driver testing, or installing non-Microsoft operating systems.

But remember: with great power comes great responsibility. Always turn Secure Boot back on once you’re done to keep your system protected from potential threats.

FAQs

1. Does disabling Secure Boot affect Windows performance?

No, disabling Secure Boot doesn’t impact system performance. It only affects the startup security checks.

2. Can I install Linux without disabling Secure Boot?

Some Linux distributions like Ubuntu support Secure Boot, but many others require it to be turned off.

3. Is it safe to disable Secure Boot permanently?

It’s not recommended unless you fully understand the risks. You can disable it temporarily and re-enable it later.

4. Will disabling Secure Boot delete my data?

No, it won’t delete your files or affect Windows. It only changes a BIOS-level security setting.

5. Can I disable Secure Boot without entering BIOS?

No. Secure Boot can only be turned off from within the BIOS/UEFI firmware settings.

By following this guide, you can confidently disable Secure Boot on your Windows 10 PC, whether you’re installing Linux, running older hardware, or simply exploring advanced system features. Just remember to turn it back on when you’re done to maintain your PC’s security.