I have dealt with WD a couple of times on a failed Raptor or 2 as that is all that I would ever consider using.
I have always registered my drives on the website after I purchase them from newegg. If you didn't register your drives you may encounter a problem, but I will tell you this. The folks there will work with you if you talk to them in the right tone of voice and explain the trouble you are having. They have never even batted an eye on any of my returns, they were darn right accommodating, that is why I always come back for more. I bought 2 more last week, and need another 3 for my Raid 5, but I always wait to get the rebates. If you show them or can email them a copy of when your computer was built and configured with the Raptor HDD in them, I bet you money they will honor the warranty as it is warrantied for 5 long years. I would be very surprised if they didn't as they are great. You can even leave them a credit card on file, and they will ship out replacements and hold you card on file in case they don't receive your defective ones. I like the advance replacement plans, and they charge nothing for it. Good Luck and I hope I have helped you out some. Jeff Don't worry they are great people to work with, and they back what they sell, play dumb if you need to about failing to register, tell them you thought the manufacturer would have.