upgrading to Windows 10 my computer won't shut down properly.
I use the menu button shutdown and the screen goes blank, but the system does not fully shut down. The screen does go blank but I can hear the hard disk spinning for almost a whole minute and I can see the LED indicator flashing. I'm not sure if you are using a notebook and trying to hibernate or trying to get your desktop PC to sleep? If you are actually are trying to shut down /turn off, there could be a lot of other things going on as well.
Sure, they have a “postpone” button that pops up, but that does little good if you happen to step away from your computer when it pops up to inform you it’s about to restart.
Many a time I’ve been working on some article or piece of software and I take a break to go get a snack, only to come back and see my computer has automatically restarted, losing a portion, or sometimes all of my work.
Go to the start menu, then settings, then system, then power & sleep. Windows can take a minute or so to shut the computer off even though the screen goes blank. If it never shuts off then time to check the power settings.