my windows is not activated

Hi @Rajesh Kumar

Thank you for contacting Microsoft Q&A Support. 

Based on your description, this following information may help you: 

Option 1: Use the Activation Troubleshooter 

• Go to Settings > System > Activation. 
• Click Troubleshoot. 
• If you see "I changed hardware on this device recently", click it. 
• Sign in with your Microsoft account (the one linked to your digital license). 
• Select your old device from the list and confirm. 

Option 2: If you still have a retail product key 

• Go to Settings > System > Activation. 
• Click Change product key. 
• Enter your 25-character product key. 

Option 3: Contact Microsoft Support, if the above steps don’t work, just let me know in the comment section or seeking the help from Microsoft: 

• Use the Get Help app in Windows or visit Microsoft Support. 
• Explain your situation—they may help re-activate Windows if your license is eligible. 

If this explanation is helpful, please click "Accept Answer" and kindly upvote it. If you have extra questions about this answer, please click "Comment".  

Note: Please follow the steps in our documentation to enable e-mail notifications if you want to receive the related email notification for this thread.