Thank you for your reply
I don't know how but it is OK now.
The wireless was not switched off . I was using the ipad at the same time
There was something at the bottom right side of screen but it was yellow, I didn't hover over it so not sure what would happen.
If I clicked on the icon and the details came up they said I was connected and the signal was good but internet explorer , firefoax and chrome could not connect me to any site.
So I did the system restore
I am to frightened to use CC cleaner or Wise Disk cleaner now