I don't know why but I suddenly cannot access the documents and settings folder in windows 7.
It has the pad lock icon on it. And whenever I try to change the settings in the properties>Security tab. And allow full control to everyone.
It just returned an error:

Can this be associated with virus or malware
And one more thing when I tried to end process for explorer.exe. And started it again. The pad lock icon is gone. And the document and settings folder now looks like a link. How do I solve this?