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If you upgrade your computer from Windows 7 or Windows 8 to Windows 10, you probably have no idea what your product key is for the latest version of the operating system. The time may come when you want to perform a clean installation of Windows 10, and this is when you'll need that key.

It is not possible to use your product key for your old version of Windows to activate Windows 10, but during the initial upgrade process this key is converted into a new one. Using a special tool, you can find out the key that has been generated for you so you can make a note of it for future reference.

Windows Forms General https. The next time user attempts to install it again in another computer that should be avoided. Thanks, Thursday, June 15, 2006 3:10 PM. And the serial number is found in Win32_PhysicalMedia class, thus we need to query twice and integrate the information into our HardDrive class. Let's first create an ArrayList. Step 1, Hold down ⊞ Win and press R. This will open the 'Run' command on any Windows PC. On PCs running Windows 7 or later, you can also right-click the Start menu and then click Run.Step 2, Type msinfo32 into Run. Do so in the search bar to the right of the 'Open:' heading.Step 3, Click OK. This will open the Windows System Information utility, which contains details about your specific model of computer. Windows 10 is also available as a retail full packaged product you can buy at a store. Inside the Windows 10 product box, you will find your product key on a small business card at the back.

There are actually numerous tools that can be used to determine your Windows 10 code. One of the more reliable and comprehensive is ProduKey which is available free of charge -- there are 32- and 64-bit versions of the software available, so make sure that you download the correct version for your system.

ProduKey is provided as a compressed file, so unzip it and then run it. In a matter of seconds you'll be provided with the key you need which you can then make a copy of, email to yourself, write down, or backup in some other way for when you need it.

Grab a copy of ProduKey from the Nirsoft website.

Photo credit:koosen / Shutterstock

In most the cases, finding the serial number of a PC usually comes down to checking the product label on the computer, as manufacturers typically print all the necessary information for identification and attach it to the case.

But if for some reason the sticker is missing or maybe it’s already ripped apart, then finding the serial number of your device isn’t as easy as it seems at first.

Luckily, it still is super-easy to find it, as Windows comes with integrated tools to display the serial number in a second. And all you need is running a Command Prompt or PowerShell command.

Before describing the commands, let’s detail a little bit why the serial number might be needed. First and foremost, it could be used by the OEM to identify your device, such as when sending it in for repairs or when trying to get support. For example, if you’re trying to connect with a support engineer, they sometimes ask for the serial number, which in turn includes information about the device.

This way, the company can find details like device model, manufacturing date, and other data which could be useful for diagnosing your problem.

Then, serial numbers are also used by device makers for drivers, so when browsing their sites to get new software, they sometimes prompt you to enter this code. This varies by OEM, but being able to quickly find the serial number is definitely recommended.

There’s one important thing, however. Older computers might not have the serial number saved to the BIOS or within the UEFI firmware, and this makes the below commands ineffective. In this case, the result of these commands will be a message reading “To be filled by OEM” and contacting the company is the only way to go.

Find Computer Model Number In Windows 10

As I said earlier, finding the serial number can be done with either the Command Prompt or PowerShell – in Windows 10 Fall Creators Update, PowerShell is the preferred choice and it replaces Command Prompt in the Win + X menu, but Command Prompt continues to be available. So it’s up to you which one you want to use, but both work just fine.

To do this in Command Prompt, it’s enough to simply launch the command line utility by just typing Command Prompt in the Start menu (or cmd.exe) and paste one of the following commands – note that you don’t have to type both commands, but only one of them, and the result is pretty much the same no matter which one you choose:

If you want to do this with PowerShell, the method is pretty much the same, only this time you have to launch PowerShell by typing its name in the Start menu or by simply right-clicking the Start menu. Choose one of the following commands and paste it in the command line – again, just one command is needed:

The serial number is displayed in the same command line window regardless of the app, and you can easily copy and save it for future references.

My Computer Serial Number Windows 10

BONUS TIP: The same method works pretty much in any Windows version prior to Windows 10, including Windows 7 and 8.1. On the other hand, the older the computer, the smaller the chances to have the serial number embedded into the PC BIOS or the UEFI firmware, though it goes without saying that it’s users of these older systems the ones that might need to turn to the aforementioned commands.

Stickers tend to wear out after a while, and a Windows XP computer, for instance, might be more than 15 years old, which means that commands like these might be the only way to find the serial number.