After having assembled my first ever pc (except for the hard disk because i wanted to do that after i had inatalled windows 7) i connected an external DVD reader via USB (i didn't install any in the pc because i don't really use dvds much) and got the windows 7 installati on disk inside, i start instslling and select language keyboard and time zone and after i'm finished the normale windows boot up screen comes up, i boot up normally and less than a second after the windows 7 animation starts... Blues screen, Stop error 0X0000007B (i'll attach a foto if i can, it's a screenshot of a video i took because potographing the screen would be hard since it only stays on for less than a second) then it goes back to before the boot up (when the ASROCK sign comes up and you can go to the BIOS ect) and goes back to the windows boot up after 2-3 seconds, if i try to boot up, even i safe mode, it happens again, any help?