I’ve scan Spybot and Destroy doesn’t seem to help SUPERantispyware and Malware doesn’t either

What do I do?

any one knows about a free and good registry cleaner software?
that be downloaded?
or just a good one that works really good?

I’ve tried freeregistryfix and registry cleaner, but they ask for you to upgrade after fixing only about 50 problems. (I still have 460+ to go)!!
I’ve tried Registry Mechanic, Registry Cleaner, and freeregistryfix

Do not want to pay, but want a good registry cleaner that removes and cleans registry absolutely free of all problems, does such a thing exist!!