tried to load onto genesis 9 figure but only the front part get loaded. back is empty. i faced similar type problem with other few hair models too? why? is it hardware related issue(my pc is low-end absolutely). see the picture
And, as far as I can see, the hair in your screenshot loaded correctly, but your character is not positioned well. Can't tell how you managed to do that 😀
Rotate character or the hair to fit. Did you loaded correct G9 hair, maybe you've loaded G8 hair on G9 character.
Right click on the hair in the scene tab and parent it to your character.