Hi,
Please try the steps in the following KB article to test this issue:
How to troubleshoot Windows Vista and Windows Server 2008 service pack installation issues
More information:
Microsoft Windows Vista Service Pack 1 (SP1) frequently asked questions
Regards,
Sabrina
This posting is provided "AS IS" with no warranties or guarantees, and confers no rights. |Please remember to click “Mark as Answer” on the post that helps you, and to click “Unmark as Answer” if a marked post does not actually answer your question.
This can be beneficial to other community members reading the thread.