I have a customer's comptuer (A Sony VAIO PCVA51L) that came pre-configured in RAID 0. One of his HDD's is failing and needs to be replaced. The HDD totally failed to the point that Windows XP would not load, that I have gotten sufficiently repaired to where I can boot WinXP properly but it's still showing that the HDD on SATA channel 1 is failing. The HDD's in there are WD1600JS and I have a WD1600AAJS to replace it with. Any and ALL help and advice is greatly appreciated.