How to Access BIOS on Windows 10: A Complete Guide

The BIOS (Basic Input/Output System) is the firmware that runs before Windows even loads — it's what tells your computer how to start up, which drive to boot from, and how your hardware components communicate. Knowing how to access it is an essential skill for troubleshooting, upgrading hardware, adjusting boot order, or enabling features like virtualization.

The catch? Getting into BIOS on a Windows 10 machine isn't always as straightforward as it sounds. The method depends on your hardware, and modern PCs have made the traditional approach harder to use.

What Is BIOS (and UEFI)?

Most modern computers don't technically run legacy BIOS anymore — they use UEFI (Unified Extensible Firmware Interface), which is its more capable successor. UEFI supports larger hard drives, faster boot times, and a graphical interface with mouse support. However, most people still call it "BIOS," and the terms are used interchangeably in everyday conversation.

For practical purposes, accessing UEFI and accessing BIOS are the same process from the user's perspective.

Method 1: The BIOS Key at Startup (Traditional Method)

The oldest and most direct method is pressing a specific key immediately after powering on your PC — before Windows begins to load.

Common BIOS keys by manufacturer:

The window to press this key is extremely short — sometimes less than two seconds — because modern SSDs boot so fast. If you miss it, Windows loads normally and you'll need to restart and try again.

Tips for hitting the timing:

• Start pressing the key repeatedly the moment you press the power button
• Don't hold it down — tap it quickly and repeatedly
• If your PC has Fast Boot enabled in Windows, even this brief window can disappear entirely

Method 2: Through Windows 10 Settings (Recommended for Most Users) ⚙️

Because Fast Boot can make the traditional key press nearly impossible to catch, Microsoft built a reliable BIOS access path directly into Windows 10.

Steps:

1. Open the Start Menu and go to Settings (the gear icon)
2. Navigate to Update & Security
3. Select Recovery from the left sidebar
4. Under Advanced startup, click Restart now
5. Your PC will restart into a blue menu called Windows Recovery Environment (WinRE)
6. Select Troubleshoot → Advanced options → UEFI Firmware Settings
7. Click Restart — your system will boot directly into BIOS/UEFI

If you don't see UEFI Firmware Settings as an option, your device may be running in legacy BIOS mode rather than UEFI, or your firmware doesn't support this handoff method.

Method 3: Using the Command Prompt or Run Dialog

For users comfortable with a command line, you can trigger the Advanced Startup menu without navigating through Settings.

Using the Run dialog (Win + R):

shutdown /r /fw /t 0 

This command restarts your PC and boots directly into UEFI firmware. The /fw flag is the key piece — it signals Windows to pass control to the firmware on the next restart.

Important: Save all open work before running this — /t 0 means zero delay before shutdown.

This method is particularly useful for IT professionals, power users, or anyone who prefers keyboard shortcuts over menu navigation.

Method 4: Shift + Restart

A faster shortcut to reach the Advanced Startup menu:

1. Open the Start Menu
2. Click the Power icon
3. Hold Shift and click Restart

This drops you directly into the Windows Recovery Environment, where you can then navigate to Troubleshoot → Advanced options → UEFI Firmware Settings.

Why Fast Boot Changes Everything 🔧

Fast Boot (both in Windows and in BIOS itself) is one of the biggest sources of confusion around BIOS access. Windows Fast Startup saves a partial hibernate state when you shut down, meaning your PC doesn't fully power off — it resumes instead of cold-booting. This bypasses the firmware key press window entirely.

There are actually two separate Fast Boot settings that can affect this:

• Windows Fast Startup — found in Control Panel → Power Options → System Settings
• Fast Boot in BIOS/UEFI itself — a firmware-level setting that compresses the POST (Power-On Self-Test) process

If the keyboard method consistently fails, Windows Fast Startup is usually the culprit. The Settings-based methods (Method 2 and 3) bypass this problem entirely because they instruct Windows to hand off to the firmware deliberately.

What You Can (and Can't) Change in BIOS

Once inside, the options available vary significantly depending on your motherboard manufacturer and firmware version. Generally, BIOS/UEFI gives access to:

• Boot order — which drive or device loads first
• Secure Boot — required for Windows 11, can affect Linux dual-boot setups
• Virtualization (VT-x / AMD-V) — needed for running virtual machines
• XMP/EXPO profiles — RAM speed optimization for enthusiast builds
• Fan curves and thermal settings — common on desktop motherboards
• TPM settings — relevant for Windows 11 compatibility

Consumer laptops often lock down or hide many of these options compared to desktop motherboards, which tend to expose far more granular controls.

The Variable That Changes Your Approach

Which method works for you depends on a few converging factors: whether your system uses UEFI or legacy BIOS, whether Fast Boot is active, whether you're on a laptop or desktop, and how quickly your storage drive boots. A high-end NVMe SSD on a modern desktop might make the keypress method nearly impossible, while an older laptop with a spinning hard drive might give you a comfortable two-second window. 🖥️

Your specific hardware and current Windows configuration are what ultimately determine which path is the right one to take.