pop ups whilst on line

I have windows 8 and when on line have a banner across the top and bottom of my screen advertising stuff and I cannot remove them. More annoying I have a banner that almost fills the screen with an advert for something and a voice over. I have blocked my pop ups but these banners still appear. I had something similar when I had XP and have the instructions to remove files from system 32 but I don't know how to do it in Windows 8 if this is what needs to be done.

  Fruit Bat /\0/\ 14:43 08 May 15

Run ADWCleaner free from Bleeping computer, see if that clears it

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