Yes, you can. During Windows 10 Setup, select the “I don’t have a product key” option and continue as usual. After it is completely installed, Windows 10 will automatically restore a previous activation on the same machine. An Internet connection is required. Apr 27, 2013  solved How do I find my Windows 8 product key on my BIOS when my laptop will not boot because of 'Inaccessible Boot Device' solved How Do I Find My Windows 8.1 Product Key On A Toshiba Laptop.

1. How Do I Get Windows Serial Key For A Reformat On A Laptop Mac
2. Windows Xp Serial Key
3. Windows Xp Product Key

I have a Lenovo laptop that had Windows 8 preinstalled on it, and I upgraded it to Windows 10 while it was free for Windows 7/8 users. I would like to format the laptop to Windows 10 so I can sell it, but I can't find a way to reinstall Windows 10 without any sort of product key. Is it possible to format my laptop to Windows 10 without a product key?

This is not related to the question this is marked a duplicate of because that question is about making a clean install of Windows 10 using the free upgrade. I am asking if, after the free upgrade, if I can clear all the files/programs/settings/etc..

2 Answers

You can Reset your Windows 10 installation. Check out this link - Recovery options in Windows 10 and expand the 'Reset Your PC' link to see where to find the option.

Yes, you can. During Windows 10 Setup, select the “I don’t have a product key” option and continue as usual. After it is completely installed, Windows 10 will automatically restore a previous activation on the same machine. An Internet connection is required.

Not the answer you're looking for? Browse other questions tagged windows-10 or ask your own question.

Laptops with preinstalled Windows 7 usually have a sticker with the product key under the laptop. Laptops with preinstalled Windows 8 or Windows 8.1, however, never have such a sticker. The reason is that the Windows 8.1 product key is embedded into the BIOS or UEFI. Here's how to get the product key, in case we cant to install Windows 8 on a different PC.

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Table of Contents

• How to get the Windows 8.1 product key from inside Windows

When do I need the Windows 8.1 product key?

On a laptop that came with Windows 8 or Windows 8.1 preinstalled, we never need to enter the Windows 8.1 product key manually.

If we reinstall the proper version of Windows 8.1 (Home, Professional, or Windows with Bing), the installation process reads the product key automatically from the BIOS; we don't even get the product key prompt.

The only reason to get the Windows 8.1 product key is if we want to transfer Windows to another PC. After transferring Windows 8, we can also upgrade to Windows 10 on the second PC.

How to get the Windows 8.1 product key from inside Windows

In this scenario, the laptop that came with preinstalled Windows 8 has a fully functional Windows operating system. It doesn't need to be Windows 8; it could have Windows 7.

After we boot in Windows, we download NeoSmart's Oem Product Key Tool.

We don't need to enter a name or an email; we just click on the Download! button.

After that, we just run the OpenKey application, and we will get the Windows 8.1 product key from BIOS / UEFI.

No installation is needed; it's simple as that.

Alternative way to get the Windows 8.1 product key

If the Oem Product Key Tool doesn't work on our PC, we can use RWEverything.

We just download the latest portable version for 32-bit or 64-bit Windows.

After the download, we extract the .zip contents...

...and run the RW application.

There, we select ACPI, then click on the MSDM tab, and we will find the Windows 8.1 product key.

Get the Windows 8.1 product key without Windows

Let's say we can't run Windows on the old laptop anymore. Maybe there is something wrong, and Windows won't boot. Or we installed Linux, and the above applications won't work through WINE.

So, now what?

There are a couple of applications that can create a bootable environment that can detect the Windows 8.1 product key. For this guide, we will use Lazesoft Recover My Password Home Edition.

The installation is safe; it doesn't hide any toolbars or adware.

After we run the program, we click on 'Burn Bootable CD/USB Disk Now!'.

We leave the default 'DO NOT Specify the Windows version'.

We can either prepare the bootable environment on DVD, USB or create an ISO image for later use.

The program will first download the WinPE components from Microsoft...

...then format the USB drive (make sure you don't have any important data on it because it will be deleted)...

...and begin writing the information on the drive. On a USB 2.0 drive, it shouldn't take more than a couple of minutes.

After the disk is ready...

...we make sure to remove it safely, to avoid the chance of any data corruption.

Then we setup the BIOS/UEFI or the boot menu of the laptop from which we want to get the Window 8.1 product key.

We boot from the Lazesoft recovery media and select the Lazesoft Live CD or USB option.

At the recovery environment, we select the 'Find Windows Product Key' option.

We confirm that we are using the free version for non-commercial reasons...

...and this is it. We get the Windows 8.1 product key, either through Windows or from the BIOS / UEFI.

How Do I Get Windows Serial Key For A Reformat On A Laptop Mac

Can I use the Windows 8.1 product key to activate Windows on another PC?

The OEM product keys are tied to the particular motherboard of the first PC they are activated on, and won't automatically activate through the Internet on another PC.

There is, however, a workaround for this: we can activate by phone.

After the installation, we press the Windows Key + Pause/Break to open the system properties and click on 'Activate Windows

Then, we select 'Activate by phone'. Don't bother with the 'Activate Windows online' option, it won't work.

Windows Xp Serial Key

Don't worry, you won't need to talk to anyone at Microsoft. The Phone Activation system is automated.

We just enter the unique nine groups of numbers for our system through the phone keypad...

...and then the automated system will provide with eight groups of numbers for the activation.

Should this fail for any reason, stay on the line and you will be connected to a Microsoft support representative.

What will happen if two PCs have the same product key?

To transfer Windows 8.1, we need to remove it completely from the old PC after we get the product key e.g. by installing a Linux distribution.

If we have two Windows installations on two separate PCs simultaneously, with the same product key, we violate Microsoft's license agreement.

It's a matter of time before Microsoft blacklists the product key, and we won't be able to use it to activate Windows anymore.

Did you have any trouble finding the Windows 8.1 product key?

Windows Xp Product Key

If anything in the above guide didn't work as described, and you weren't able to find the Windows 8.1 product key, leave us a comment.

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