I have 3 drives in this machine. One 500gb 7200.10 and two 750gb 7200.11 seagates. Both of my 750s throw spin retry errors that show up in Hard disk sentinel. They are both brand new and it says it can be from a weak motor or power supply. I have them both on a 550w corsair psu and the 750's are on seperate lines. Should I worry about this? I have upgraded them both to the AD14 bios. Thanks for any input.