If you have a PC that came with Vista pre-installed and without a Vista DVD, it is difficult to do repairs without an official Microsoft Vista DVD. This topic has been discussed here before with various recommendations: 1. Get a Microsoft Vista Anytime Upgrade DVD 2. Build a VistaPE environment using the free WAIK download from Microsoft I just ran across this article tonight and it contains a third alternative, a link to a download of an ISO image that contains the repair components that are on Vista DVDs. Using this image you can do repairs. Here is the link.