Quoting directly the Microsoft moderator:  "This error can occur if your computer is using an Intel 82801ER SATA RAID chipset (ICH5R).The driver on the Windows 7 install media does not support this controller. Usually a driver update should result in resolution; however, the latest version of the Intel driver which supports this chipset (version 5.5) is only supported on earlier versions of Windows prior to Windows Vista.This means that the ICH5 chipset (82801EB or 82801ER) is not supported and the Windows 7 install or upgrade will fail regardless of which driver version is currently installed for it." See here for more information :: [URL] If this is not your case then you have some options... The work around is not to put in the product code when asked.  Do that on validation after the update installs.  Here is the guide: [URL] If that doesn't work there is options here if your comfortable with your registry : [URL]
When installing Widnows 7 upgrade from XP, it start out loading files and expending them, but when it time to reboot the I get the message "Windows cannot update computer's boot configuration.Installion cannot proceed.  Does anybody have a solutin to this problem?
Windows 7 upgrade from XP