the disaster of my computer

I am so scared because my computer has some problems when I opened it after a peroid of displaying off
the screen didn't show out the window
it was just like a dark mirror
and then it started to play a music
a girl was singing
I was really afraid because it was 12am
and then after the song the girl started to say something
it wasn't very clear but I started to understand it was an AD of the adult sites
I was so afraid of the virus which was going to attack my computer
then I decided to turn off my computer in an incorrect way
now it can use again
but I start to use Norton to scan my computer to check whether there is virus in my computer

worst of all
I couldn't enter my English blog at first
then I surf the Q&A page
it answerd me like the following
"Take a deep breathe- the world isn't ending."----->really funny
Try another computer.
or Check the firewall in your computer to see if the cookies doesn't allow the blogger