I'm glad you have had good luck with Maxtor drives. As it turns out, so have I. Some, including a gaming oriented PC magazine, have not. I did not know I was crying about this. I posted some news I read while looking at upgrade options, hoping for feedback (like yours) that could clarify why Maximum PC would not recommend Maxtor drives for nF4 chipset motherboards. It turns out that this is a bigger issue than I thought although it has an easy solution. As I said before:I can confirm the nForce 4 chipset works with Maxtor Diamond Max drives, as I've used many, with various firmwares.
All I can say, is check it with PowerMax as the HDD may very well be defective. (On an Intel chipset based system if you need to - you are a tech, act like one and stop crying. Real techs always have one of each system, if not more)...
Many people come to this forum looking for advice on building an awesome nForce4 gaming rig. It seems to me that steering them away from a serious glitch when alternatives are available makes sense.