Folks!

For few days I find that my notebook does not shut down as it does normally, and I have to press the power button to do so. It restarts just fine. I am unable to get the diagnosis, and therefore requesting for your genuine suggestions.

My potential opinions are:

1. Something wrong with OS.


2. Virus infected (however, I had done a complete scan of the notebook).


3. Hijacked!

Thank you in advance.