Hi,
Thank you for writing to Microsoft Community Forums.
I understand your query related to activating Windows 10 on your PC.
Usually, if you purchase a PC from an OEM with pre-installed Windows then the license is provided by OEM and the PC should be activated automatically with a genuine license. If you have purchased the PC from OEM and facing activation issues, then please get in touch with the OEM for license of Windows 10.
However, based on the screenshot you have provided it seems that the Windows was installed using a Default Product Key, and Default Product Keys can only be used to install Windows but not to activate the copy.
In case, you have purchased the PC with a retailer then you need to get in touch with the retailer for the license of Windows 10 to activate the copy of Windows installed on the PC.
If the copy of Windows was purchased from Microsoft then you may need to get in touch with Microsoft technical support team to get further assistance.
Regards,
Prakhar Khare
Microsoft Community – Moderator