Long story short, I have this 3 TB hard drive. I use it for second-hand storage meaning that i store what I need on it, put it away until I need it again. Now, Everything was working perfectly fine as of a week ago and now I can't do ANYTHING to the drive. It gives me the "semaphore timeout period has expired" whenever I try to format it. I've tried going into the elevated cmd and doing the CHKDSK command on the drive letter (when it's recognized) and whenever I put in the drive letter, it says that it's an invalid parameter. I've also tried going into diskpart and doing a clean, create partition primary deal, but it always gets stuck at the clean and it gives me the semaphore error. I just got it a year ago and there hasn't been anything physically damaged, and I've always stored it in the packaging that it comes in. I have no clue what the hell is wrong with it. Any help would be GREATLY appreciated.