Where can I find what this error code is

 

Error code 0F00:0240

MSG Block 234355722

 

This occured when I was running Dell diagnostic on my hard drive after I fixed a major melt down of the computer. Had to re-load everything and we are back up and running. The last thing to do was to make sure all hardware was in working order because I'm not sure what started all my problem. I have a feeling I have some bad sectors on the hard drive.

 

Can anyone help me?