Windows is not activating

Hamza Latif 0 Reputation points
2026-07-30T15:21:06.7833333+00:00

Hello,

I have a Lenovo laptop (Model 82TS, Serial Number: PF4JJLP4).

The laptop originally came with factory-installed and activated Windows 10 Home.

I performed a clean installation of Windows 11 Home using the official Microsoft ISO.

Windows is not activating.

I have already tried:

  • Activation Troubleshooter
  • slmgr /ato
  • slmgr /upk
  • slmgr /cpky
  • Restarting the PC
  • Reinstalling Windows 11 Home

Current activation errors:

  • 0xC004F213
  • 0xC004F034
  • 0x803F7001

The OA3 OEM product key is blank in BIOS, but the laptop was factory activated.

Could you please check if my device has a digital license and help reactivate Windows 11 Home?

Windows for home | Windows 11 | Licensing and activation
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  1. DaveM121 921K Reputation points Independent Advisor
    2026-07-30T15:54:49.6066667+00:00

    1

    Those errors indicate Windows cannot find an OEM licence on your laptop, where did you purchase the laptop from, was that direct from Lenovo or from a PC Shop or online retailer?

    2

    Download the free ShowKeyPlus app from the Microsoft Store.

    Please provide a screenshot of that app window and please hide any product key in the screenshot.

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