Disk Problems?
 

I have a small problem and not sure what to do I have the updated Limewire 4.9.37. Whenever I finish downloading a song, movie, or data and the download starts to verify I get a Error and it says Disk Problem? I have ran scandisk, I have defragmented my Hard Drive. I also have McAfee Anti-Virus, ran it and no viruses found. yet I cannot get my downloads to verify and then move to the completed folder is there anyone who knows what might be causing this?