I have a brand new ASUS laptop N550jv, loads of memory and a fast processor and touch screen. Works extremely well but it will not fully shut down. I tried the normal shut down, setting the power button to shutdown and also from the command prompts - all give the same result.
The screen switches off after a few seconds but the wifi, disk and keyboard all stay active. If left for a long time ie 30 mins or similar it sometimes restarts. I can force a full switch off by holding the power button down. It sleeps and wakens almost instantly and works fine.
I disabled fast startup - no difference
I also disabled all the startup processes in task manager- still no different
If I start in safe mode then it shuts down ok - which to me suggest something installed is still running...