ML150 G2 can't detect Adaptec ASR2120S

[gugi]

ML150 G2 was working fine with the the raid controller. No changes and from one moment to the other the controller wasn't shown during post and i can't access it with ctrl+A.
Bios ist the latest 06/30/06, we changed the controller and the systemboard - same problem.

Thanks for help!

Controller Info:
ML100 SCSI RAID PCI controller ADAPTEC ASR2120S 64BIT/66MHZ U320, 1 Channel RAID model, Sparepart: 325609-001.

[Timur S Lukovkin]

Reseat the controller again...that sounds like a controller issue...at least on post we should see the controller...also check the BIOS (F10) under chipset options if the SATA feature is enabled!