I've decided to install Ubuntu 16.04 along with Windows 10 on my Dell Inspiron 15 3000 Series. Now both OS's can't shut down properly.
What is looks like is that all processes are killed during the process but it never powers off completely unless I long press the power button. Then Ubuntu splash screen freezes at some point and on Windows the screen goes dark as if it had worked but since I can only turn on the laptop again after long pressing, it has the same problem.
After doing some search, a few solutions involved changing the definition of GRUB_CMDLINE_LINUX_DEFAULT on /etc/default/grub. However, none of that worked for me.
sudo shutdown -h now didn't do it either.
Booting seems alright (can't be sure) - though when I choose to initialize Windows there is this weird purple screen between the setup option screen and the Windows loading screen. (but sorry that's not really the reason for this topic lol).
Lastly, I can restart okay.
Sorry about my English and long post but hopefully I can't get this solved soon as I don't think shutting down my laptop by holding down the power button is good for it.
Thanks in advance.