When i scan my registry is it safe, will i be deleting anything important
thank you
If you blindly remove all in registry scan you do face a large chance of deleting something important. Follow the advice in my signature (the text below this post)
CCleaner is considered to have a gentle registry cleaner, however that doesn't mean it can't cause problems as all registry cleaners can give a false positive. As long as you leave the creation of backups on in CCleaner you can undo them, and have a current System Restore Point (preferably a daily one as a good computing practice) to restore from you can pretty undo any registry cleaning mishaps.