More and more when I try to connect to the internet I keep getting pop-up's that there are fatal error's in my registry from all types of places such as fixmyregistry.com, www.windowsregistrycleaner.com. I don't have a credit card so what is the best safe freeware or shareware? Should I pay attention to these pop_ups? Everytime they come up they keep me from connecting to the internet and force me to use ctr+alt+del to restart my computer because I cannot access my start menu (the little hour glass shows when I go to it) HELP!

In CCleaner once you have scanned the registry for issues then fix the selected issues, how do you restore them if yo need to?

After downloading IMVU, my computer started running very slow. After a while, i deleted it from my computer, and my computer is running slower and worse than ever. Things keep installing themselves, and at random times things from internet explorer like advertisements keep popping up. It freezes very often as well. I've tried deleting things that arent necessary on my computer, and its only improved a little bit. What can i do to fix this my computer?