I've started a thread on the Asus forums, but thought that maybe this community could be helpful as well.
First, my machine:
Motherboard: Asus P5N7A-VM
BIOS version: 0519 4/29/2010
CPU: Intel Core2 Quad Q9400 2.66GHz LGA 775 95W
Memory installed: 4096 MB
Memory type: OCZ ReaperX HPC 4GB (2 x 2GB) 240-Pin DDR2 SDRAM DDR2 800
Hard drives: (1) Seagate Barracuda ST3250410AS 250GB 7200 RPM SATA
(2) Seagate Barracuda 7200.11 ST31000340AS 1TB 7200 RPM SATA
(3) Seagate Barracuda LP ST32000542AS 2TB 5900 RPM SATA
Operating System: Microsoft Windows 7 Ultimate 64-bit (installed on hard drive #1 above)
Video card chipset: NVidia GeForce 9500 GT
Now, the problem that I'm experiencing is that when the system boots, I receive an error at the BIOS level. There error message states "AHCI PORT0 DEVICE ERROR" followed by "Press F1 to resume". If I press F1, the system boots just fine and Windows starts up just fine. However, Windows does give me a message stating that there's a problem with a hard drive (the system hard drive, identified as #1 above) and brings up the Windows backup manager. It tells me I should backup my system and then replace the hard drive. Before I do that, I'm hoping that someone can confirm that the problem is most likely with the hard drive, and not with the motherboard itself.
Have any of you experienced this before, or seen anything similar?
Thanks in advance for any assistance. If there's more information that you need, let me know and I'll provide it.