7:50 - arrive at work, turn on Windows workstation
7:51 - get coffee, greet co-workers
8:10 - workstation finally up, check overnight logs
You know you can just leave your windows computer on all night too, it will eventually enter sleep mode anyway (takes a few seconds the next day to "wake up") :)
That's against policy where I currently work. They also push updates that require a reboot overnight. Lots of big companies I've worked for do that as well.