Registry Cleaner Question?

I downloaded a freeware called regCure. I scanned only my DLLs with it and it said i had 540 to clean. but it was a trial version so it couldnt clean them. I uninstalled it. When I did that it asked if i was sure i wanted to uninstall since it didnt clean those files. I said yes. I got another freeware that worked 100%. But when i scanned my DLL folder it came up with 0 results. is that becasue REgCure put them in a special place or something?

By free, I mean totally free, not just a trial version.

Or if it is a trial version, I need it to clean all errors not just a few of them.

i need one fast as i used a trial version and it found over 700 faults but it did not repair then so i need a free registry cleaner that will clean and repair my pc. does anyone know of any site?