|If you can't get either to update from their applications or from the microsoft web pages then you need to reload OS. It may be that you could find event log entries that tell why or what is wrong. It could be that you have some virus or malware or simple data issue.|
I guess you could try a "repair" but booting to the vista dvd and use it's repair.
1/3 of highway deaths are caused by drunks. The rest are by people who can't drive any better than a drunk.