If bios can't see it, the fault is not Vista's.
Check the connections, power and data cables, make sure they are fully seated and that the cables are not damaged.
As you have failed to heed the note in red, I can't make any further guesses.
vista cant see the 2nd drive in the bios or via device manager and im starting to get a bit p**sed off!
Iahve had to re install vista recently and since then i cant see it it picks up my c drive and my d drive(cd/dvd) but not the samsung hard drive.
I have to say sorry in advance as im not as techy as you guys probably are so any help would be very very welcome!