My Asus P5ND Bios refuses to detect my new Western Digital 1TB SATA drive. Attempted so far: Tried different SATA ports (Mobo has 4) Tried different Power cables and SATA cables Checked the BIOS settings for SATA IDE (all enabled) and RAID (all disabled). I'm not trying to set up raid, just a normal standalone SATA drive. Flashed the BIOS to the latest version (1101) Tried updating the chipset driver to version 15.24. This caused XP to stop loading and led to a 12-hour spiral of doom yesterday. Several failed re-installs and two clean installs later, XP is up and running, and reads my other SATA drives (2 HDD, 1 optical). Also updated XP to SP3. But neither BIOS nor XP will read the 1 TB drive. RIG: Intel Quad core Q6600, 2GB DDR2 ASUS P5ND MoBo Geforce 8800GT XP Pro SP2 (just updated to SP3 but that didn't help) Two existing hard drives, both WDC 500 GB SATA New (undetected) HDD: WDC Caviar Green 1 TB Two LiteOn optical drives, one IDE DVD-ROM and one SATA DVDRW Any help would be deeply appreciated!

Try swapping the sata port with a known working one like the one used by the dvd burner.

Thanks! I tried all the ports already; whichever port the new drive is connected to shows up as "None" during the disk detection process at boot time. All other ports show up with the correct name of the drive connected there. I even tried using different SATA cables, even swapped it out with the cables connected to the existing drives. The only drive that refused to show up was the new one. That eliminated the SATA ports and cables.

If you have swapped cables and connectors and you are sure you have good power to it we can assume it has failed. "Best Practices", Event viewer, host file, perfmon, antivirus, anti-spyware, Live CD's, backups, are in my top 10