trouble with the effin sata cables

[M1kkelZR]

ok so i finally got my crosshair2, but my Sata cables just wont plug in. they plug in easily to the black ones, but then the pc wont boot.
but the blue ones are just being stupid and wont let me connect!

 

[M1kkelZR]

nvm, solved the problem. the enclousere for the cable was bent a bit, so i had to make it nice and straight