RegClean Pro is a rogue anti-spyware program (a rogue registry cleaner), very similar to RegClean or RegClean 2008. It works as follows: a free trial version of the program is installed to a computer; it imitates a system scan and uses various psychological techniques in order to convince its victims into buying a full version of the program.
After RegClean Pro performs a registry scan, it displays a false and exaggerated report full of registry errors. The only solution to the problem that the messages suggest is purchasing of its full version. There is no need to tell that your computer does not have any issues listed in these warnings except for RegClean Pro itself. Please note that even though it displays Microsoft Gold certificate in its webpage, the application is in no way related to the latter company.
In order to fix your PC you should remove this rogue application as soon as possible. Although rogue anti-spyware removal is typically a difficult task there are legitimate tools and removal guides available that can help to get rid of RegClean Pro.