I am currently using Windows 8.1
2 days before I updated my PC to 8.1 from 8
Then last night I kept Asphalt 8 for downloading from the store
And in the morning I shut down the PC and after several minutes
when I turn on my PC it shows somewhat like this :

"The System Event Notification Service service failed the sign-in.
Function could not be executed"

And the PC also doesn't shut down I have to force shut down it.
So please help, it's not starting at all. I even tried in Safe Mode
but it shows somewhat like this when I open MSCONFIG
and disable startup items