I get annoyed enough when it is a normal startup. I turned my computer on at 6:28 today, because I knew I had a 7:30 meeting I needed to be join - I was a minute late and that was normal startup. It is even worse if the computer did an update the day before - even though the computer was off for 15 hours and so there was plenty of time: there is no option "install updates doing whatever reboots needed then shutdown when done". Instead I have to sit there staring at a update screen while it does whatever.