Error Code 0xC004F211

The error code 0xC004F211 typically indicates that Windows is unable to activate due to a problem with the product key or the activation server. Since you mentioned that updating your BIOS has caused you to lose your Windows activation key, here are a few steps you can take to resolve this issue:

1. Check for a Recovery Option: If your computer came with a pre-installed version of Windows, the product key might be embedded in the BIOS. You can use tools like "ShowKeyPlus" to retrieve the key from the BIOS.
2. Contact Manufacturer Support: Since you lost the activation key that came with your computer, reaching out to your computer's manufacturer for support may help. They can provide you with a replacement key or guide you on how to reactivate Windows.
3. Use the Microsoft Activation Troubleshooter: If you have access to Windows, you can try running the activation troubleshooter. Go to Settings > Update & Security > Activation and select Troubleshoot.
4. Reinstall Windows: If you have a valid Windows license, you can reinstall Windows using a USB stick or recovery media. Ensure you have the correct version that matches your license.
5. Purchase a New License: If all else fails and you cannot retrieve your original key, you may need to purchase a new Windows license.

Make sure to back up your data before making any significant changes to your system.

Hi,

Since it's a key you bought from the manufacturer and didn't change any hardware, try activating it after the hardware change, as shown in the link below:

https://support.microsoft.com/en-us/windows/reativando-o-windows-ap%C3%B3s-uma-altera%C3%A7%C3%A3o-de-hardware-2c0e962a-f04c-145b-6ead-fb3fc72b6665

Give feedback if the information was useful or not.

Thanks