I am having problems with registry errors on explorer, will just running this program fix the problem. It works but if I go to certain web pages it just brings everything down
It's unlikely, and as you would possibly be running Fix all Issues it may well introduce more problems. CC reg clean removes unused and invalid registry entries and is not really a problem fixer.
Your problem could be anything, maybe certain web pages try to run Java or some other code that your pc doesn't like. You need more diagnostics, there are others here more experienced in that than me.