Windows 10 is now an OS that is widely used by the public. You are advised to buy genuine quality Windows. Every original Windows DVD always has a unique serial number key. The question may arise how many times can you use a Windows 10 key? You may think that you can use the same DVD and key for another laptop.
The thing that you should know is about a Windows 10 OS only that can be used for a single user. You can install this Windows 10 on your computer, and this information will be stored in your computer’s BIOS. If you reinstall Windows 10 OS, your computer will realize that. It will answer a question about how many times can you use the windows key.
How Many Times Can You Install Windows 10 Key?
There will be a question about can I reuse a Windows 10 key on the same computer? The answer is yes and that Windows 10 will be a core for your first installment OS. You can use it again and reinstall it unlimited times. You don’t have to enter the same key again every time you reinstall your OS due to malware or virus problems.
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Another question is about to do I can use Windows 10 key to another computer? The answer is no. You can only use one license key for one laptop. Another computer or laptop will require another Windows 10 OS. If you force to use it, there will appear a problem with Windows 10 activation someday so that you will not be able to use your laptop.
Check Windows 10 Activation Status
If You are not sure about the genuine product of your recent laptop, you can check the activation status. When you use genuine Windows 10, your license will link to your Microsoft account, and it will give a sign about your activated OS. This link will give you advantages whenever you have to change your hardware due to broken.
The first step to check activation status for your Windows 10 OS, you can click the Start button. You can choose to click Settings. You will see Windows Settings Menu on your computer screen and select Update & Security.

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You can see the Update & Security menu, such as Windows Update, Windows Security, and Activation on your left side. Double click for the Activation option.

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There will appear Activation Window on your screen, and you can see the information about activation status. You have to remember that Windows 10 key only can link with one Microsoft account. You may say, one computer for one key only.
Activate Using a Windows 10 Product Key
You bought a genuine Windows 10 DVD so that you can use it for your computer. You need to activate it first for the first installment process. You will get code with 25-characters long. Whenever you want to install Windows 10, the setup software will ask you to fill the Product Key.
If you have installed the software without a product key, you can fill the key with the specific method. You can click the Start button. Choose to click Update & Security and select Activation.

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Update Windows 10 Product Key
Choose to Update product key and Change Product Key. These steps will allow you to activate your Windows 10 OS.

Your product key will link to your Microsoft account directly after the activation. Whenever you get problems correlated to broken hardware and computer reinstall, you can use your Windows 10 OS again.
So many Windows 10 users also ask for this question: How Long does it take to upgrade Windows 10?
Conclusions
You can try this task by yourself, and it does not require programming skills. Everybody can do it due to Microsoft company has designed it easier to be used for a beginner. How many times can you use a Windows 10 key has answered, and you can use it repeatedly on the same computer or laptop.