Windows 10: Computer won't pull up any programs or apps and this is only after starting?

So I dun-dooffed. This is my first time dealing with something to this extreme. I looked over several forums from the past 10 years but none were like this. I was thinking it would be great to have a logitech app that supports my mouse and helps me get the settings I want. I still don't have those settings and now my computer won't even pull up any windows, apps, programs and whatever else. This is during startup. All I can do is wave my mouse across the screens and look at the pretty pictures I have as a wallpapers. I multiple monitors.Can't open Task manager, msconfig, or cmd.Challenge: Remo

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Windows 10 won´t start any program as Administrator

Hello. I´m having this issue since installed one of the latest Windows 10 system updates.

When I try to open any program that requires Administrator confirmation (that screen with the Yes/No question), this dialog won´t appear anymore. The screen background stays darkened and nothing happens.

1. Using Windows 10 Home (x64)
2. My microsoft user account is properly checked
3. I´m the administrator of the PC
4. Already tried do create another administrator user account - same problem, no success
5. Cannot start any program/service that requires administrator authorization (not even regedit)

Please help!

 

Lumia 830 main camera won`t start

After windows 10 update my lumia 830 camera won`t start . It says Camera won`t start . I tried other camera apps but camera still not work . Front camera working plz help me . I did hard reset , soft reset , downgraded to 8.1 but problem still persist

 

I unplugged my computer to soon and now it won´t start up again?

Thanks for your answer.

This solution did not solve my problem since my computer won´t power up at all. it is as if the computer is completely dead and I have tried different outlets that work for other computers but it still won´t power up.

Is my motherboard broken?