I have two of my customers pc's that are failing the windows 7 sp-1 update. The one I am working on now fails after the reboot cycle. It stops @ 15%. I have let it sit there for as long as 24 hours with no change. The downloading and installing the update part appears to go ok. I have tried this by using automatic updates, manually downloading the file and running as administrator and by the ISO. I have disabled the Eset virus protection and done a selective startup of the msconfig file. Attached is the CBS log.