I purchased a 9100z desktop computer on 1/13/2008. I have (2) 500gb hard drives, on 1/27/2010 both hard drives failed. When I purchased the computer, I asked about warrenty on hard drives. I was told I had a 3 year warrenty on each hard drive. Now HP insists the warrenty was for only one year. I contacted Western Digital, they verified the warrenty on each hard drive is good until 1/13/2011. PROBLEM...Western Digital assigned warrenty to HP, HP will not honor, but will replace for $250.00 +shipping &handling. Western will sell replacement... read full review »