If Windows 7 came preinstalled on your computer:. Try the following:. Click Start, right click Computer. Click Properties. Scroll down to Windows Activation. Click the link 'Change product key'.
Enter the product key located on the COA sticker attached to the bottom of your laptop or in the battery compartment.
2. Find Windows 10 Product Key Using Registry Editor
Click Next to activate over the Internet.
1. Find Windows 10 Product Key Using Command Prompt
COA Certificate of Authenticity:. What is the Windows Certificate of Authenticity?
5. Check Certificate of Authenticity (COA)
If you its retail store bought license you installed and activated yourself, try the following:.
4. Check Confirmation Email from Microsoft
Here are four utilities, all of which will may display your product keys if they are still there: Belarc Advisor: http://www.belarc.com/free_download.html (It does a good job of providing a wealth of information.).
Locate your product key for Windows 7 or Windows 8.1
Also: http://www.magicaljellybean.com/keyfinder.shtml and: http://www.nirsoft.net/utils/product_cd_key_viewer.html and RockXP: http://www.majorgeeks.com/download4138.html which has additional features.
3. Use ShowKeyPlus for Windows 10
Windows Product Key is embedded in the computer’s BIOS/UEFI firmware and cannot be easily seen or accessed.