Windows 10: Windows won't start up

HelloFew days ago I was getting a message on my desktop computer "USB current....." something and was "shutting down in 15 seconds to protect.......". After an online search it brought me to opening up the machine and cleaning it and then everything worked fine until yesterday. It wont startup it goes up to a point and stays there with no error and nothing on the screen. I tried several times to forced it to shut down to restart it again as i had no option to restart it safely and it seems I managed to cause an issue because of this. After some time it finally starts but in the blue screen

:)

 

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

 

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!

 

Home screen won,t start tried reboot won't start either.

Home screen won,t start tried reboot still won't start?