** Official ** Gigabyte UD3 P45 Series -- EP45-UD3 / EP45-UD3R / EP45-UD3P

[fireblast713]

System:
Intel E8500
G.Skill 4GB Ram
EP45-UD3P Rev. 1.0 F10 Bios
WD VelociRaptor 150GB SATA HDD
Seagate 1.5TB SATA HDD
Hitachi 1TB SATA HDD
Hitachi 1TB SATA HDD
Seagate 2.0TB SATA HDD

Having a strange issue, hoping someone could help me out. So my 150gb Raptor which was my OS hard drive died recently, I RMA'ed the drive and installed the replacement they sent me and now my EP45-UD3P doesn't recognize all my SATA drives, it'll consistently recognize the Raptor and the 2 Hitachi hard drives, however it will never recognize the 2TB Seagate hard drive and will only recognize the 1.5TB Seagate if I set the ICH10 controller to ACHI mode. In ACHI mode it recognizes the Raptor, the 1.5TB Seagate, and the 2 Hitachi. In IDE mode it recognizes only the Raptor and 2 Hitachis.

I checked the power and data cables, tried new data cables, switched the ports they were plugged into (which makes it appear like some ports work and others don't, because when I switch the Seagate into the Hitachi ports, the seagates show up). This makes it seem like the SATA ports have gone bad, however I haven't changed anything except the Bios and the new hard drive, I didn't have any issues prior to the failure of my primary drive. I have also tested the 1.5TB drive in an external enclosure and it works fine, so I don't think the drives themselves are bad.

Anyone have any ideas? I was playing around with the ACHI settings if that matters, but since then I have reset my bios to default settings. I also updated from the F4 to the F10 bios prior to installing the replacement hard drive they sent me. If anyone knows what's going on or has any ideas let me know, I'm considering just RMA'ing the board but I'd rather not if I could avoid it. Thanks.