So many times it happens that we change some setting in windows and we mess up with everything . Also it is many a times difficult to remember the default settings of windows. to solve this problem their an excellent small utility tool RefreshPC which is freeware. It detects operating system automatically and applies fixes.
· Reduce errors in the Event Viewer
· Fix service misconfigurations that may be causing problems including slow boots.
· Clean your temporary folders.
· Reset key registry entries back to their default values.