Hello to all. I hope you are doing good.

How can i delete .dll from my system32?? I'm having troubles removing certain .dll associated with virus or spyware, is there a way to remove easily, i'm receiving this error message: "Access is Denied. Make sure the disk is not full or write-protected and that the file is not currently in use" I would like to remove them, there are no software associated with this file i think.

Thanks in advance.