Hi! I'm not very tech savvy but I have a few questions, so I apologize and would greatly appreciate it if anyone would help me/give me pointers.

I recently obtained a 20Y0S26L00 (ThinkPad X1 Yoga Gen 6) and can no longer contact the original owner.
It has an 11th Gen Intel so I am kind of worried this method will not work.
When I boot, it complains about the date and time in the BIOS and I replaced the CMOS battery.

However, it still complains and I tried to set the date and time in the BIOS and it seems there is some supervisor password. I can still access...