Lenovo Legion 7 issues

Recently I've bought Lenovo Legion 7 laptop for work. I thought it would be great to highlight setup steps and potential issues with Lenovo Legion 7 laptop. I do it mostly for myself to remember how I did it.

My version has the following configuration: LENOVO Legion 7 15IMH05, 15.6", IPS, Intel Core i7 10750H 2.6GHz, 16GB, 512GB SSD, NVIDIA GeForce RTX 2070 MAX Q - 8192 Mb, Windows 10, 81YT0017RU. I bought it with a rather good $350 discount.