Windows 10: Accidentally ended tasks and computer not turning on

While I was trying to cutdown on my CPU usage this morning, I accidentally ended a system related task and first I noticed that my taskbar disappeared and then I tried to turn the computer off by pressing down the power button for about three seconds, then tried turning it back on but the computer is not starting. Please what do I do?

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I accidentally ended an important task.

Hey, I accidentally ended a task and turns out it was very important because my whole screen went dark after I did that. No taskbar , I couldn't even see the start menu. And that task had the logo of the libraries. Is there anyway to fix this. Because when I restart my device the screen is still black, no taskbar, nothing.

 

Accidentally end task Service Host

Hi and welcome to the forum.

You can restart the computer and the service should run normally again. Normally if you want to stop a service from starting at boot you have to select the startup type:

 

Accidentally end task Service Host

Hey guys please note this is my first time to use windows OS. While trying to end task another program i do mistake, i end task Service Host from task manager, but there is something that pop up like warning message as u can see in the screenshot and i hit cancel. My question is did i just broke my windows or i changed some setting in windows ?
Thanks in advance. And nice to meet you guys i just joined this forum..