Yes. Did you get my reply ?
The best option is reinstall your Mac OS X. Reinstalling OS X won't delete any of your files. It will just replace the corrupted system files with new one and that should fix the problem. Follow the steps below to reinstall the OS X.
Restart your Mac and immediately hold down Command and R keys for 10-20 seconds and this will boot your Mac to the Mac OS X Utilities screen. From there, click Reinstall Mac OS X. Then follow the instructions to reinstall your Mac OS X.
Please let me know if that didn't work, so we can continue troubleshooting.