Does your Asus motherboard have the raid controller? If it does, make sure you're not plugged into the Raid IDE connectors, I had the same prob on my A7V 133.
] My village called, their Idiot is missing!
Asus Maximus VI Hero
Intel i7 4770K@ 4.2 GHz
16GB G-Skill Trident X DDR3 2400 Ram
Corsair 750HX "Silver Certified" PSU
Corsair H70 Hydro CPU Cooler
2x PNY GTX 770 OC2 4GB in SLI
180 GB Intel 520 SSD
2 TB Barracuda HD, 2 TB WD Caviar Green
Logitech G-510 Keyboard
Windows 7 Professional 64 bit
3 Samsung 24" LED SyncMaster Monitors