The majority of computer errors, system instability and crashes can be traced back to errors or corruption of the Windows registry. If you've been using your computer for any amount of time, chances are you have multiple Windows registry errors. Every Windows registry ends up with such problems eventually.
RegClean is a Windows Registry Cleaner, Kernel32 DLL Error Message Fix & Access Violation Repair Software which out simply, means it will scan your registry, find errors causing your PC problems, and repair them immediately. The developers claim that it does the job that a technician might charge 100 dollars for which seems a bit much but it certainly does a good job - at least in the short term.
I noticed a considerable improvement in speed although some shortcuts ceased working which was a bit annoying. At least RegClean is easy to use and prompts lead you through the entire registry repair process. The process takes no more than a few minutes depending on how messy your registry is. However, within a very short time, the computer seems to lag again suggesting that whatever improvements this program makes, are quite superficial.