Hi, over this week we've been getting lots of random BSOD with literally unknown hardware errors, disk boot failures and the such. A week before, I had to reinstall XP because the boot volume had been destroyed and was unable to be fixed by check disk. During this volume problem, I noticed the HD kept disappearing from the BIOS boot up sequence, so I opened the case and noticed the power plug was very slightly loose on one side of a male-to-female connector. I twist tied it down, and reinstalled to get to were I am now. This SATA HD is about 1 month old, and when I went to run the WD smart disk test yesterday, the disk fails within 10 secs and I get lots of ATAPI and Disk errors in event viewer. Do you think I got a bad HD or the plug had something to do with it? Possibly the MB also as I keep getting a "No Secondary master 80 pin connector" in the BIOS boot up, even though it is connected to the DVD drive and fully works in Windows? Thanks for any help. Trying to sort this now before I get my replacement from WD.