Disable system restore, reboot, that will clear all restore points. Do another scan and if all clear, enable system restore again.
It is unlikely that it could repair only certain files are repairable, e.g. files that have been infected (and are monitored/protected by the VRDB), rather than the virus file, which is totally malicious.
It is best to send it to the virus chest, first do no harm and investigate as you have done here by asking questions and searching google (see below), etc. This way if the file has been incorrectly it can be restored from the chest.
A google search for winupdates.exe shows this is likely to be the 'W32.HLLW.Gaobot.BB' or 'Rbot family' and your OS may be out of date if this was Gaobot.BB as this virus exploits MS vulnerabilities that have long ago been patched. So a visit to windows update is in order.