why me wtf is this please help

omg not again hey this is what I think every time the same with my firefox or explore I've just uploaded two pictures here you can see what I mean I do not know how I need to explain, but the layout as
you see does not look I have had this problem a while four years I was a member of the PC links I have been advised as how and what to do but every time it came back I did not feel that every time my PC format for this little thing but if my PC formatteren that will be gone and then it does everything 100 percent again
how is it possible if you're the best anti-virus scanner with a license and keep updated on your PC everyday
how is it possible that this happens people who have an understanding of hacking Please comment what I can best do this type of operation is already thank you