Repeated efforts were made to help you with the best advice to be given in this case, but you either are unaware you can click the blue links to read illustrated tutorial, or for some reason unable to ask back specific questions to get the suggested tasks done. Why is this?

If you want to be certain about the state of your hard drive then you need to run the maker's HD Diagnostic extended CD scan which was first suggested to you in the Troubleshooting Steps for Windows 7. Instead every time this was repeated you just blithely ignored it instead of asking back any questions to get it done.

If you want to rely only on the SMART data then you could guess the HD is failing and replace it, then do a Clean Reinstall - Factory OEM Windows 7. If you follow the steps you will end up with a perfect install of Win7 for as long as you do.