I have a 1.5 TB Seagate hard drive that has triggered a chkdisk twice in the last two months. The first time, windows replaced security id with default security id for file xxx. I allowed it to finish, and the drive was unbootable.

I installed a new drive, installed OS (Windows 7 HP 64bit) and was able to at least pull the data after futzing with the security settings to take ownership. I have since just left the drive attached for additional storage.

Two days ago, this inactive storage drive again requires a check disk. What is causing this to happen? 

![security id](https://i.stack.imgur.com/hsccJ.jpg)

Added details per comments and answers:
Crystal Disk Info

![CDI drive e](https://i.stack.imgur.com/4zrLB.jpg)