According to Razer official website:
https://www.razer.com/gaming-laptops/razer-blade
the Razor Blade 15 base tech specs shows that your computer should have just a Built-in HD webcam (1MP / 720P) insted of a Windows:registered: Hello built-in IR HD webcam (1MP / 720P) usually installed on Advanced model
Windows Hello face authentication utilizes a camera specially configured for near infrared (IR) imaging to authenticate and unlock Windows devices as well as unlock your Microsoft Passport.
I'm sorry but probably you have to consider the option to buy a specific external webcam for face recognition.
Here some examples
For streaming and security: Logitech Brio 4K ($200 at Amazon)
Budget-friendly security: Mouse Facial Recognition Camera ($70 at Amazon)
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