trackpad not working windows 10 w/bootcamp

Got a Older Macbook Pro 2007....it really still works great. Looks like it's brand new. I just upgraded from Windows 7 to Windows 10. Everything went smoothly except for the Trackpad. I read a couple of things that said to repair bootcamp. I tried that but whenever I hit Setup it tells me you need Windows 7. I went to device manager in WIndows and sure enough it's got that warning sign that there is an issue. I tried to update the latest driver and that didn't work, both by seaching onine and on the thumb drive. I made a new bootcamp thumb drive. Any ideas?

David