Your Repair Log looks fine.
While I've heard of Crystal Disk, I've never used it.
I was going to download it but see that it comes with Open Candy adware, so gave it a miss.
Run HD Sentinel again to see if its report has changed and then open Command Prompt (Admin) and enter chkdsk c: /r and follow the prompts for it to run at the next boot.
When done, go start - type eventvwr and press enter.
When it has read the data, expand Windows Logs - click on Application/Action/Find then type chkdsk or wininit into the Find box and press enter.
Cancel the Find box and read the full report in the scrollable window.
To post the report, click on Copy/Copy details as text in the lower right pane - right click in the reply box and select paste.
Open another admin cmd prompt and enter chkdsk f: /r then do the same for that report.
The chkdsks can take some time complete, so pick your moment when to run them if there is something else you want to do on the computer.