Activate windows 10 with used product key. Solved Can I use Windows 10 key to activate a. Solved Is it possible to download and install windows 10 and use a product key from an old computer.
I have somewhat of an interesting problem that might not have a solution, but it never hurts to ask. I am trying to find my Windows 8 Activation key that came with the operating system when it was pre-installed on my Microsoft Surface Pro (first generation).
Last week I went ahead and upgraded to Windows 10 Technical Preview on the surface tablet, however now I am trying to revert and re-install windows 8. I assume that when I try to do this I will need to provide an activation key.
Does anyone know if this is possible? I downloaded a program (https://www.magicaljellybean.com/keyfinder/) and it shows my Windows 10 CD Key, but would that be the same as my old Windows 8 activation key?
Let me know if you guys have any ideas - thanks!
Your product key is contained in the ACPI table SLIC. It's human-readable there. If you use the correct install media, it should be automatically detected and entered, no need for you to do anything.
Nirsoft's ProduKey, http://www.nirsoft.net/utils/product_cd_key_viewer.html, might be of help. Also, is there a sticker on the Surface Pro or its packaging, if you still have it, with the key?DrMoishe PippikDrMoishe Pippik
Windows 10 Serial Key Retrieve Off Broken Computer Screen
You can simply use the 'rollback option' that appears after you restart your computer. I've tried it before and it reverted my Windows 10 install to Windows 8.1 with no problems.
Also, my current Windows 10 Tech Preview serial is the same as my original Windows 8.1 license key, and I assume this is the same for everybody who has upgraded their systems through Windows Update (not with a complete ISO and clean install). If the program provided by @DrMoishe Pippik doesn't work, you may want to use Speccy Portable to write it down somewhere before doing the rollback:
Most keyfinders will pull your Windows product key and your Internet Explorer key. If you've lost your Win 7/8 key and you don't have a label or the label is destroyed, you can try using your Internet Explorer key. I've found that the IE key is always the same as your Windows key, but for some reason, upgrading to Windows 10 doesn't change the key over when you pull it with a keyfinder.
Edit: for use in the case that you have passed the one-month rollback period and your physical key media is destroyed.
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Serial keys for software programs, more accurately called product keys or installation keys, are needed before you can install almost any popular software program.
Serial keys or key codes are often required during the first part of a program's installation or sometimes after using a program for a certain period of time.
So what do you do when you can't find that special installation code but you need to install the program again?
Where Can I Find Serial Keys and Installation Codes for My Software?
Without a doubt, a key finder program - a special kind of software tool - is the best way to go if you're lost a serial key for one of your software programs, so long as it's still installed or recently was.
Product key finder programs are software tools that automatically search your computer for the serial keys stored in the Windows Registry or elsewhere on your computer.
For example, when you installed your operating system and other software, the product keys used during their installations were stored, probably encrypted, inside a specific registry key.
See our article on free product key finder software programs for a ranked and reviewed collection of these very handy tools, all of which are free to download, install, and use.
Now, you could manually look in the registry for the serials and install keys yourself, but they can be very hard to find. Not only that, the stored keys are usually encrypted, making what you dig up there completely useless anyway.
Most product key finder programs were originally designed to find the serial numbers and key codes for operating systems like Windows 10, 8, 7, Vista, etc., but many of them find serials and keys for many other programs, too, like office suites, video games, and more.
What If the Program I'm Missing the Serial Key for Isn't Installed Anymore?
Even if you think, or know, the program you've lost the key for isn't installed on your computer anymore, you should still try one of the higher rated product key finder tools in our list.
Sometimes,a program will leave the registry keys that contain that program's serial key in the registry even after it's uninstalled, which is why this is worth a try. This isn't usually the case when the program was removed with a dedicated software uninstaller, but it's still worth a try.
If that doesn't work, you're left with digging around for the box the software came in, the email that accompanied the download, etc.
What If I Still Can't Find the Installation Code I'm After?
Unfortunately, at this point, your only legal option is to buy a new copy of the program.
In your search for help with lost serial keys, you've probably come across software cracking tools, keygen programs or maybe even lists of free key codes, there for the taking.
It's very important to realize that none of those resources are legal ways of obtaining installation keys or any other unique code designed to protect programs from being pirated.
The only legal way of installing software is by using a valid installation code obtained through a legal purchase of the software program.