Is it legal to to use the same product key on your new computer if you old one is dead?

Hi, I have killed my old computer and have pulled the HDD and put it in a enclosure and recoverd the files I need. Anyway I want to format this drive and use it as an exturnal. So what I am asking is that if I build a new computer, can I download the iso image for the same operating system for my old computer, and then use the product key from my old dead computer to activate my new computersoperating system? Is it legal to use the same product key twice if the other computer is never ever going to run again?


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Vyger5 years ago
Some versions are tied to the computer/motherboard. Microsoft gives the company big discounts for a one use license. However other versions are not tied to a computer as long as it is only running on one. Unless of course its a multi licensee version.

If you have a legit product key and its only on one computer then I wouldn't worry about it.
David97 (author)  Vyger5 years ago
So basicley some product keys are designed to olny be used once and can olny be used once and then there not valid. And others can be used muliple times as long as they are one computer at one given time. Is there a way to tell if my product key can be used multiple times without installing windows?
If the copy was from a boxed system like a Dell or HP then the product key won't work with another system. It is registered to a specific hardware configuration. If you have a full license or OEM license then there is a limit to how many times that license can be used with the stipulation that its only registered to 1 computer at a time. They don't want you running a single license on more then one machine at a time.

BTW you kid of need to install windows before you can register it. Kind of pointless to register a copy of windows and not have it installed on a machine. But i get what your saying. You want to register an pirated copy of windows using your key. That will work only if its the same version of windows (i.e. your key is for a 63 bit version of win 7 home premium and so is the pirated copy). You can't use a Home Premium key on an Ultimate install.
HaroldRamirez5 months ago

Recently i got a windows 10 key from a page. The key is working properly and it's genuine. Shared to you:

I don't think you can activate your system without a product key either with a free one. In fact, you can just buy a genuine product key from the site. It's very cheap and guaranteed. Choose one key from the site and place the order. The email will be sent to you at the first time. The whole process is very simple and easy to follow. Next time, when you or your friends encounter with the same problem, directly tell them to place the order onsite and you will let your system activated in short time.

I don't believe you can simply activate your Windows 8.1 activation key without a product key. If you go to the Microsoft official site and have an elaborative reading of the Windows 8.1 activation key OS specifications, you will find that a product key is necessary and required to activate the system. But you don't need to buy the product from the Microsoft while you can just order one from the partner site . The email will be sent to you with the genuine product key and some relevant instructions.

In order to activate your Windows 8.1 Professional key, you just need to get a product key from the site . It's the legal copy and you will experience a good after-sale service. The site not only provides product key for Windows 8.1 Professional key, but also windows 8 and so on. If you have any technical problem, you also can contact the service department online. Don't worry. Any such problem, just contact them and you will get support.


I am afraid that you are unable to activate your Windows 8.1 Professional key without a product key. You can just order one from the online site cooperated with Microsoft. All the product keys are legitimate and official. Then just activate your Windows 8.1 Professional key with the purchased product key. The activation process is simple and easy to operate.


of course, the best place to buy a key is ms. i purchased years from ms online store. however, this time, i'd like to share one special experience on .

i visit my forum everyday. one day, i found a piece of recommendation from another guy. so i visited this site.

at the beginning, i'm quite skeptical at them. the price is too low.

then i sent many questions to them.

out of my expectation, they replied to me very soon. each question was answered.

at that time, i planned to try the new Windows 8.1 Professional key.

long story short, i purchased a key from them, received it and download links(32bit&64bit) in about one hour. i need 64. and, more important, the key works at the first try.

i sent much feedback to them. in one word, i'm very satisfied with this purchase, and i think, i should pass words to you.

Just like me, not a master of the computer, I believe many of us may get stuck with the computer problem. Take this question for example, based on my previous experience, I think you have to get a product key to activate your Windows 10 key. Just go to the site and place your order to buy one. When you pay for it successfully, the genuine product key will be sent to you timely. You can activate your Windows 10 key in several minutes.

Office Key1 year ago

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bwrussell5 years ago
Every product license is different but regardless of that if I have something installed in only one place at a time I couldn't care less what the license says. My personal belief is that if you've paid for one copy then you get one copy, regardless of where it's installed and if the EULA disagrees then that company is evil and greedy. That being said I've reformatted and reinstalled my wife's copy of Win 7 6-7 times and it's registered fine each time with the same code. The latest time was on a brand new SDD.
FoolishSage5 years ago
To be sure you need to check the terms and conditions of the particular software but generally speaking windows will allow up to 10 installations with 1 key (less if it is OEM, times) if I recall correctly.