Just before Christmas I decided to get a newer laptop than my current XP
T60 Lenovo Thinkpad.

I ordered a T540P Lenovo Thinkpad, with i5 4300M (2.60GHz), 8GB RAM, 1TB
SSD HD, 15.6in 1920x1080 FULL HD Screen, intel HD, DVDRW, and Win7pro/64

But they sent me one with Win10pro/64

I needed Win7 to avoid the risk of any incompatibility issues with
existing software.

Starting the new machine, I am already disliking the unfamiliar swirly
dots waking process. I still have to walk through the set up, and I
already dread all the things I will need to disable, such as Cortina.

Am I doomed?

Win7 for me purrrs and behaves quite nicely. It's an OS that I am
familiar with and can get to a task quickly.  This Win10 is an annoying
pot-hole that introduces further delay before I am up and running with
all my apps.

--- Thunderbird 2.0.0.24 (Windows/20100228)