Event ID's

7 The device, %1, has a bad block.
The device has a bad block of memory. The data may be missing or corrupted. If this event is logged regularly replace the drive. Microsoft Event 7 from Source Disk
11 The driver detected a controller error on %1.
Bad cable according to Microsoft Event 11 from Source Disk
52 The driver has detected that device %1 has predicted that it will fail. Immediately back up your data and replace your hard disk drive. A failure may be imminent.
Backup data nd replace drive ASAP. Microsoft Event 52 from Source Disk