How do I figure out what model Lenovo all-in-one desktop idea centre that I have?

Does this PC operate or not.?????????????????????????????
this is covered at Lenovo.com why not read there, we are not them.
all PCs have service tags
sadly the newer PCs, remove the tag (dang!) and then moved it to the BIOS info page
well if BIOS is dead, how can you read that, I yell to the sky.
marketing goons did that, you know the folks that can NOT fix PCs.

try here.

https://pcsupport.lenovo.com/us/en/warrantylookup


use the service bridge app. it runs and tells you , what PC you own.and if in warranty.
we are not lenovo, all we can do is point to them
or teach you diagnosis skills.
all in one has vast models....

and this page again at, (drum roll) lenovo.com

https://pcsupport.lenovo.com/us/en/solutions/find-product-name

See backside sticker