Hi guys... As said, my problem is this: I have just connected four drives to this new mobo (haven't installed OS yet, Windows 7 x64 to come). In slot 1 is the system drive, in slot 2 biggest drive (a year old, from the title) and couple more drives in slots 3 & 4. Everthing was recognized but slot 2. I have then switched drive from slot 4 (10 years old drive) to slot 2 and WD drive to slot 4 and now all is recognized. But why it doesn't recognize when WD is in slot 2?