Hardware virtualization is a setting in your computer's BIOS that lets programs run virtual machines — separate operating systems inside your main one. You turn it on by restarting your PC, entering the BIOS setup menu during startup, finding the virtualization option (usually called VT-x, AMD-V, or Hyper-V), switching it from Off to On, and saving your changes.

Key Takeaways

  • Hardware virtualization lives in your BIOS settings, not in Windows — you cannot turn it on from your desktop.
  • The exact name and location of the setting varies by manufacturer: Intel calls it VT-x, AMD calls it AMD-V, and the menu structure differs between BIOS versions.
  • You must restart your PC and press a specific key during startup (often Delete, F2, or F12) to enter BIOS before Windows loads.
  • After you turn on virtualization and save, your PC restarts automatically — this is normal and takes a few minutes.
  • If you cannot find the setting or it is grayed out, your processor may not support virtualization, or your motherboard firmware may need an update.

Check Whether Your Processor Supports Virtualization

Not every processor has virtualization built in. Intel processors from around 2006 onward usually have it, as do AMD processors from around 2006 onward, but older or budget models sometimes do not. The fastest way to check is to look up your exact processor model on the manufacturer's website.

If you are not sure which processor you have, right-click the Start menu, select System, and look for "Processor" in the window that opens. Write down the exact model name and number. Then visit Intel.com or AMD.com, search for your processor, and look for "virtualization" in the specifications. If the spec sheet says "Yes" or lists VT-x (Intel) or AMD-V (AMD), your processor supports it.

If your processor does not support virtualization, you cannot turn it on — the BIOS setting will not exist. If it does support it but you cannot find the setting, your motherboard firmware may be outdated and need an update from the manufacturer's website.

Restart Your PC and Enter BIOS Setup

Shut down your PC completely. Do not use Sleep or Hibernate — actually shut it down. Then turn it back on.

As soon as the screen lights up, start pressing a specific key repeatedly — do not wait for Windows to load. The key varies by manufacturer: common ones are Delete, F2, F10, F12, or Esc. If you are not sure which one, look for a message on the startup screen that says "Press [key] to enter Setup" or "Press [key] for BIOS." You have only a few seconds before Windows starts, so press the key several times in quick succession.

If you miss the window and Windows starts loading, shut down again and try once more. It usually takes a few attempts to get the timing right.

Locate the Virtualization Setting in BIOS

Once you are in BIOS, you will see a menu with tabs or categories at the top. The virtualization setting is usually under a tab called "Advanced," "CPU," "Processor," "Chipset," or "Security." Use the arrow keys on your keyboard to navigate between tabs.

Look for a setting with one of these names: "Virtualization Technology" (Intel), "VT-x" (Intel), "AMD-V" (AMD), "SVM" (AMD), "Hyper-V" (Microsoft), or "find Virtual Machine." The exact name depends on your processor and motherboard. Once you find it, the setting will show "Off," "Disabled," or "Enabled" next to it.

If you cannot find it after checking all the tabs, try using the BIOS search function — some newer BIOS versions have a search key (often F3 or Ctrl+F) that lets you type the setting name. If the search finds nothing, your processor may not support virtualization, or your BIOS version may be too old.

Change the Setting from Off to On

Use the arrow keys to highlight the virtualization setting. Press Enter or the right arrow key to open a dropdown menu showing the current value. Select "On," "Enabled," or "Yes" — the exact wording varies. Press Enter to confirm your choice.

Some BIOS versions let you press + or - keys to toggle the setting instead. If you are not sure how to change it, look at the bottom of the screen — most BIOS menus show keyboard shortcuts like "Press Enter to change" or "Use +/- to modify."

Save Your Changes and Restart

After you change the setting, look for a "Save and Exit" option, usually near the bottom of the menu or accessible by pressing F10. Select it and press Enter. The BIOS will ask you to confirm — select "Yes" to save. Your PC will restart automatically.

During the restart, you may see a message saying "Initializing CMOS" or "Loading default settings" — this is normal. Your PC may take longer than usual to start up the first time after this change. Let it finish completely; do not force a restart or turn off the power.

Verify That Virtualization Is Turned On

Once Windows has fully loaded, you can check that the change took effect. Right-click the Start menu and select "Task Manager." Click the "Performance" tab, then click "CPU" in the left sidebar. Look at the bottom right of the window — if it says "Virtualization: Enabled," the setting is working.

If it still says "Disabled," go back into BIOS and double-check that you saved the change correctly. Sometimes the setting reverts if you did not confirm the save, or if your motherboard has a setting that overrides it (occasionally called "Virtualization Lock" or similar).

Frequently Asked Questions

Will turning on virtualization slow down my PC?

No. Virtualization only uses resources when you actually run a virtual machine. When you are not using one, the setting has no effect on performance. Once you turn it on, you can leave it on permanently.

What if I cannot find the virtualization setting in BIOS?

First, make sure you are looking in the right tab — it is usually under Advanced or CPU settings. If you have checked all tabs and still cannot find it, your processor may not support virtualization. Look up your exact processor model on Intel.com or AMD.com to confirm. If it does support it, your motherboard firmware may be outdated and need an update from the manufacturer's support page.

Do I need to turn on virtualization to use Windows Hyper-V?

Yes. Hyper-V and other virtual machine programs require hardware virtualization to be on. If you turn on Hyper-V in Windows but hardware virtualization is off in BIOS, Hyper-V will not work.

Is it safe to turn on virtualization?

Yes. Virtualization is a standard feature on modern processors and is safe to enable. It does not expose your PC to security risks or cause instability. Many PCs ship with it already turned on.

What if the virtualization setting is grayed out and I cannot change it?

A grayed-out setting usually means another BIOS option is preventing it — sometimes called "Virtualization Lock" or a security setting. Look for related options in the Security or Advanced tabs and make sure they are not blocking virtualization. If you cannot find the blocking setting, check your motherboard manufacturer's manual or support page for your specific model.