How much time is "dead" when using PC/Windows

I'm so amazed that we as a community can spend so much time on getting our PC's to work instead of letting someone else take care of it. I've tried to measure all time I spend on stuff that is not productive, like start up, shut down, installation, configuration, error handling, patching, rebooting and the like. Here's a list of time spent a common week...

1. Start up I do every day and it takes 4 mins.
2. Shut down also 7 times a week at 1 min
3. I install at least 1 new program each week which takes 20 mins (including reboot)
   
4. I spend about 30 mins configuring all the stuff I have installed
5. In average I do patching every week and reboot which takes 20 mins
6. There's at least 2 errors a week which requires investigation and reboot taking some 30 minutes

In total I spend 7*4+7*1+20+30+20+2*30= 165 minutes i.e. 2 hours 45 minutes every week or 143 hours per year managing my PC instead of being productive.

How could this time be used for something better then you might ask? This is my answer: Stop using a PC for doing IT related work. Ask your ISP to provide a Virtual Display Client with no management and constant availability.