Installments Problems

Hello

The CD that came in the box, I put it in my computer. When I did, first this big page popped up. It had said to click the logo at the bottom of the page so I did. When I clicked it, this window had popped up to install the program on my computer the first page was just like an introduction so I clicked next. The next page it had showed its contract so I read it and clicked next. Then the third page it was asking me where to install the program I looked at the destination and I agreed in where they were going to put it. When I tried to click the next on the that page it seemed as if the next button was inactive. I did all the requirements but somehow the next button was still inactive. What should I do?:neutral_face:

P.S.: The item that I bought was a Sansa Clip.