Well if you`ve got a lot of corrupted files and you`re not happy with windows, it`s time to reinstall.
Just backup your files manaually, just copy and paste. What did you use for a reinstall ? And how did you do it ?
Or is your 1st statemant " I just reinstall it " a question ? Please clarify.
Just use windows built in imaging, it works perfectly. If you need help with that in the future, just let us know. You should be backing up all your data on another source. Another partition, another hard drive, an external hard drive, a flash drive, dvd`s, cd`s etc.
How are you getting these corrupted files ???
Did you google it ?
When SFC can't repair system files, the next step is a Repair Install.
However you can always benefit from starting over, so follow these same steps to get a perfect Clean Reinstall - Factory OEM Windows 7 http://www.sevenforums.com/tutorials/219576-clean-up-factory-bloatware.html