Hey, i'm having a small issue with my HDD. All of a sudden last night i saw a log in eventvwr stating "The driver detected a controller error on \Device\Harddisk0\D". I ran S.M.A.R.T and my hard drives are fine, the performance of the computer hasn't changed, though i decided to run a defrag on Harddisk0, which is not the OS drive, data drive only, and it finished the defrag no problems though thats when that error appeared. Once of, never seen it before. If it has some sort of error, i would of expected it to BSOD, specially during a defrag. I had a close look and i kinda relised that my fan control most likely is loose for some reason, and one side of it is actually just BARELY touching the hdd case and causing a vibrating sound. As soon as i touched the fan control the sound goes away. So its a bit hard to know whats making the noise though it seems to be a vibrating noise, though goes away once i put my finger on the fan control. I've got everything backed up, thats no problem. \Device\Harddisk0\ = Relates to "disk 0" in Disk Management am i correct? Any suggestions are much appreciated. Thanks. //edit: Searched a bit on the net, found out that it could be either a IDE cable or power connector loose or faulty, could that be the case?