I have recently purchased a Lenovo ThinkBook Plus Gen4 Twist with Dual Screen. Here are the links for the product information:
ThinkBook Plus Gen 4 (13″ Intel) | 13.3″ & 12″ Dual-Screen 2-in-1 Business Laptop | Lenovo UK
However, somehow the serial number and the product name is no longer showing under the BIOS, Windows 11 or Lenovo Vantage.

Strangely the laptop's under cover does not show any information about the Make, Model, Type or Serial Number (No sign of tampering but no labels etc...). I am not sure what to do.
I do not have access to the original box...

Hello Everyone!
As a new member of the forum here is my introduction;
I have been a tech enthusiast for many years and fixing personal computers for years but like some on the forum I am not a professional.
My first personal laptop was a Lenovo ThinkPad 700ds and have always admired Lenovo's innovative designs and build quality that is on a different level compared to HP or Dell.
Currently using a Lenovo ThinkBook Plus Gen4 Twist and have a HP Omen X 17 gaming laptop
Hate Apple products (Lols) and Love Android.
I hope to be able to make a great contribution...