My friend is using windows 7 Home Premium which came pre-installed in his HP laptop. Everything was working fine but he used a cleaner software to clean the junk files Present in his laptop. There was an option to clean the Registry and he cleaned the registry also. After that everything works fine but he is not able to create any new folder anywhere in his computer. He asked me about this issue but I don’t know much about it so Please guide me to solve this issue.