Originally Posted by
ichigo
Going back to a previous version will not help. Previous versions affect official patches and applications. They do not affect any files you have downloaded in the meantime. It will only set you back. The virus is not official, nor a form of any patch.
Stopping and deleting the servies, may also not r
emove the virus, its stops it from running This time, but there is no guarantee that whatever installed the virus or where it got downloaded from/to will also be removed.
New antivirus to detect and remove, or a fresh install are really your best options. pm for more details if needed.