Re: Wrong BIOS setting.
IDE will make your SATA devices appear as IDE devices. It is intended for legacy OS support (such as Windows XP if you can't find SATA drivers for it). Native mode will enhance performance of SATA drives if i remember right.
However, switching fully to AHCI from IDE requires a reinstall of Windows.
CRT 4 LIFE!!!
P35-DS3 F14 + E6550 @ 3.67GHz lapped/Scythe Mugen
8GB Corsair DDR2-1066
Sapphire HD3870 512 DDR3/Accelero S1
Western Digital WD3200AAKS + Teac/Lite-On opticals
Creative Audigy (blown onboard HD audio, whoops!)
Akasa Zen Black + Seasonic SS-500HT
and NOKIA 920C 19" CRT - 1440x1080 @ 85Hz - who said HD is flat panel only?