hindi po ako yung naglagay ng product key before may tech po ako na friend nag remote desk lang kami sya nag ayos kaso di ko na sya mahanap now ihTry checking your Windows activation status first.
Go to:
Settings → System → Activation
Check if the error code is shown there.
You can also run this command in Command Prompt (Admin):
slmgr /xpr
It will show your activation status.
If you recently changed hardware or reinstalled Windows, you may need to activate again using your original digital license or product key.