since I downloaded windows 10 it,s been nothing but trouble.  I have no start button and no menu. I,ve only got on the net through goggle which I,ve got rid because keeps telling me to download this security stuff, it,s the only way I could get rid of it. my Samsung is not compatable with windows 10 so that's not working now either. I want to go back to windows 8 but not got no settings button either. can anyone help?