Well, it sounds like you aren't having any problems - you just want to know how to check for errors. The Samsung Magician software can give you a basic summary of the SMART status, and other info on the drive, such as wear leveling, re-allocated sectors, hours on, error count, etc.... That's all you need.
To get this, just go to the system summary page, and then to the drive summary, and select the drive. Then select the SMART option. Information on any drive errors will be there.
Edit: I was going to say something bad about all the crappy info on this page, but I'd better not...