Advanced SystemCare Personal (free)

Hi
IObit & their Advanced SystemCare, have been one of my favourites of recent times.
They claim,

"Trusted by 35 Million Users to Care for Their PCs

Advanced SystemCare Free (formerly Advanced WindowsCare Personal) has a one-click approach to help protect, repair, clean, and optimize your PC. With over 35 MILLION downloads since 2006, this fantastic, award-winning free registry cleaner and system optimizer is a "must-have" tool to speed up your slow computer. 100% safe with no adware, spyware, or viruses; a PC maintenance program that’s incredibly easy to use.

Why waste money on expensive "registry cleaners" to fix your PC when Advanced SystemCare Free will repair, tune, and maintain it for you – for free!

You’re just minutes away from a faster, more stable and error-free PC"

Go on & click on the link.
See for yourself.

AdvancedSystemCare

Hi
It is important to note that both the "Personal" & "Pro" versions are contained in the same download.
So if you haven't "Registered" [Paid for Pro] just download & install the "Free" version.
You can "Update" to the "Pro" version at anytime.
Via the program itself.