Grub dont show up after debian installation?

Hey so i installed debian i have a rampage iv black edition motherboard and after the installation whatever disk i try to boot from grub dont show up and it only loads windows im not really sure why... i guess its maybe a uefi thing? i have never had this problem before... and i got no errors at all or anything like that doing the installation btw

Did you try Boot Repair?

ah no i did not try it i just thought it kinda should just work .... so thought it was something else i did reinstall it few times and still no errors but still dont load grub ... i maybe test that when i get less lazy : p

i did finally try boot repair and yeah it worked weird problem but yeah thanks anyway! now its time for that damn nvidia driver lol ... was some months ago i was on linux i have forgot everything ;( hehe...