Free Professional Registry Doctor - Version 6.2.6.4 Free Professional Registry Doctor is an easy and comprehensive application to keep your PC running cleaner, faster, and error-free!It can prevent your computer from windows crashes, identifies missing, corrupt, or invalid items, enhance system stability and efficiency, and repair your PC and keep it tuned.Within few minutes and fewer mouse clicks, you can easily attain maximum optimization of your windows registry with Free Professional Registry Doctor. It will scan your complete registry and fix the registry problems. For your convenience and for insuring maximum protection, Free Professional Registry Doctor automatically backup any repairs made. So you always can restore Windows registry to the original state using restore button.