How to Fully Wipe a PC: Methods and What to Expect

What "fully wipe" means and why you might do it

A full wipe removes everything from your hard drive or solid-state drive — the operating system, programs, files, and settings — and leaves the drive blank or with a fresh copy of Windows installed. This is different from a factory reset, which keeps some system files in place. A full wipe is what you do before selling or giving away a PC, before recycling it, or when you want to start completely fresh without any trace of your old setup.

The process takes between 30 minutes and several hours depending on your drive size, the method you choose, and your computer's speed. You will need either a Windows installation disc or USB drive, or access to another computer to create one.

Key Takeaways

A full wipe removes Windows, all programs, and all files, leaving your drive blank or with a fresh Windows installation.
You can wipe using Windows built-in tools (Reset this PC), a bootable USB drive with Windows installation media, or third-party drive-wiping software.
Back up anything you want to keep before you start — a full wipe cannot be undone.
If you plan to sell or give away the PC, use the "Remove files and clean the drive" option during reset to make data harder to recover.
After wiping, you will need to reinstall Windows or another operating system before the PC is usable again.

Using Windows Reset This PC (the easiest method)

Windows 10 and Windows 11 both include a built-in reset tool that wipes your drive without needing external media. Go to Settings > System > Recovery and select Reset this PC. You will see two options: "Keep my files" (which removes programs but keeps your personal files) and "Remove everything" (which wipes the entire drive).

Choose Remove everything. Windows will then ask whether you want to "Remove files and clean the drive" or just "Remove files." If you are selling or giving away the PC, choose "Remove files and clean the drive" — this overwrites the drive space so deleted files are harder to recover. If you are keeping the PC, either option works.

The process will restart your computer several times and take 30 minutes to an hour on most machines. When it finishes, Windows will be reinstalled and you will see the setup screen as if the PC were brand new.

Using a Windows installation USB (when Reset This PC fails)

If your PC will not start, or if Reset This PC is not working, you can wipe using a bootable Windows USB drive. You will need another working computer and a USB drive with at least 8 GB of space.

On the working computer, read the Windows Media Creation Tool from Microsoft's website. Plug in the USB drive, open the tool, and follow the prompts to create installation media. This takes 10 to 20 minutes. Then move the USB drive to the PC you want to wipe.

Restart the PC and press the key that opens the boot menu — usually F12, Esc, or Del, depending on the manufacturer. Select the USB drive from the menu. Windows setup will start. When you reach the screen asking where to install Windows, select your main drive, right-click it, and choose Delete. This removes all partitions and wipes the drive. Then select the now-empty drive and click Next to install Windows fresh.

Using third-party wiping software for maximum security

If you are concerned about data recovery — for example, if the PC contained sensitive business or financial information — third-party software can overwrite the drive multiple times, making recovery nearly impossible. Common options include DBAN (Darik's Boot Negation), which is free, and Eraser, also free.

DBAN is a bootable tool: you create a USB drive with DBAN the same way you would with Windows installation media, boot from it, and let it run. It will overwrite your entire drive with random data multiple times. This takes several hours on a large drive but is very thorough. Eraser runs within Windows and can target specific files or the entire drive.

For most people, the "Remove files and clean the drive" option in Windows Reset This PC is sufficient. Third-party tools are worth the time only if your old data was highly sensitive.

What to do before you wipe

Back up anything you want to keep. Once the wipe starts, recovery is extremely difficult and expensive. Copy important files to an external drive, cloud storage, or another computer. Check your email for any attachments you might need, and write down any license keys or passwords you will need after the wipe (though you should store these securely anyway).

If you use Windows Hello or a PIN to log in, write down your Microsoft account password — you will need it to set up the PC again after the wipe. If you have programs that require license keys, note those down too. Some software, like Microsoft Office, is tied to your Microsoft account and will reinstall automatically; others require a key or a separate purchase.

After the wipe: what happens next

Once the wipe finishes, your PC will restart and show the Windows setup screen. You will create a new user account, connect to Wi-Fi, and choose privacy settings. Windows will then read and install updates, which can take 30 minutes to an hour depending on your internet speed and how many updates are available.

After setup, you will have a blank PC with only Windows and its built-in apps. You will need to reinstall any programs you want to use — web browsers, Microsoft Office, antivirus software, and so on. If you backed up personal files, you can copy them back from your external drive or cloud storage.

Selling or giving away your PC after a wipe

A full wipe is the right step before handing off a PC to someone else. If you used "Remove files and clean the drive" during the reset, the drive has been overwritten and old files are not easily recoverable. You can then either leave Windows installed (so the new owner can set it up themselves) or wipe it again and leave it blank for them to install their own operating system.

If you are recycling the PC, a full wipe is also the responsible choice. Many recyclers will wipe drives themselves, but doing it beforehand ensures your data does not sit on the device while it waits for processing. Keep documentation of the wipe in case you need to prove the data was removed.

Frequently Asked Questions

Can I undo a full wipe?

No. A full wipe is permanent. Data recovery services exist but are expensive (often $300 to $3,000) and not always successful. Back up anything you need before you start.

How long does a full wipe take?

A standard wipe using Reset This PC takes 30 minutes to an hour. A wipe with "clean the drive" enabled takes longer, usually 1 to 3 hours depending on drive size. Third-party tools like DBAN can take 4 to 8 hours or more because they overwrite the drive multiple times.

Do I need a Windows license key to reinstall after wiping?

If your PC came with Windows 10 or 11 pre-installed, the license is tied to the hardware and will reactivate automatically after you reinstall. If you bought a separate license, you will need the key. Windows will let you install and use it for free for a period before asking you to set up.

What if my PC will not boot into Windows to use Reset This PC?

Use a bootable Windows installation USB drive instead. You will need another computer to create the USB drive using the Windows Media Creation Tool, then boot from it on the broken PC and wipe from there.

Is "Remove files and clean the drive" necessary, or is "Remove files" enough?

For personal use, "Remove files" is sufficient. For selling or giving away the PC, use "Remove files and clean the drive" — it overwrites the drive so deleted files are harder to recover with specialized tools.

This guide is for general information only and is not medical, financial, legal, or other professional advice. For decisions specific to your situation, consult a qualified professional. See our Editorial Policy.