Some years ago I went to the dentist and had to get x-rays done on my teeth. After a fair bit of time going through all of the different angles, the technician apologized to me and said that we have to do it all again.

The computer tied to the x-ray machine did a forced restart for Windows update, this is back in the days of Windows 7, and I had to get my teeth x-rayed all over again after we sat and waited for 20 minutes.