Keeping the Windows Registry clean, ordered and optimized is one of the tasks you should do regularly to keep the PC working perfectly, and make it more efficient, quick and powerful. This is the function of RegistryBot 4.42.This program lets you repair the most common Registry errors, do defrags, optimize the running of programs on system startup, be able to delete/modify manually whateveer you want, delete invalid and non-essential entries that only take up space, delete duplicate information, repair installation errors, repair the most installed DLL libraries, delete non-useful error routes, restore defective ActiveX, DLL or OCX component paths, stabilize the system, etc.