Can windows be repaired?

oneano

Honorable
Aug 16, 2012
48
0
10,530
I have been running Vista on my system for about 4 yeas, and the inevitable is happening. It is slowing down, odd things stop responding etc. Can it be saved or do I just need to reinstall?
 

oneano

Honorable
Aug 16, 2012
48
0
10,530
Why is this simple question always evaded? Can windows be fixed? I do not want to reinstal since I do not want to overwrite files. I want to fix windows.