I agree. I think replacing the motherboard is the way to go. If it works, then you will have verified that the HDD is OK and it was a motherboard problem. This is also something that you can do without sending off one of your components.

If it doesn't work, then you can still send off your HDD. However, you need to copy your data before sending off your HDD because whatever is on your HDD is likely to be wiped in the process of testing the HDD.

Please keep us posted and Good Luck.

Cheers,

Linda