Reports about upgrade problems from Windows Vista to Windows 7 began to appear on Friday on several forums and support websites. Users who experienced these difficulties mentioned an endless reboot cycle after a failed Windows Vista to Windows 7 upgrade. The users received the message "“This version of Windows could not be installed, Your previous version of Windows has been restored, and you can continue to use it" during the upgrade process. The next reboot of the system however launched the upgrade again and not the Windows Vista operating system. A Microsoft Knowledgebase entry gives further details and a fix for the endless reboot issue (but not the failed upgrade).
Windows Vista will have been restored on the computer but the Boot Configuration Database (BCD) store has not edited to restore Windows Vista as the default booting operating system.
The computer will continue to boot to the Windows 7 Setup and then fail until the BCD database has been restored to its previous state.
To resolve these issues, select Windows Vista instead of the default Windows 7 setup when you see the boot entry menu and then follow the steps listed below.
1. Insert the Windows Vista Media into the drive and exit the Windows Vista Setup when its launched
2. Click Start, All Programs, Accessories, and then right-click the Command Prompt icon, and then click Run as Administrator.
3. Type the following command at a command prompt and press ENTER
Drive:\boot\Bootsect.exe /NT60 All
Note: In this command, Drive is the drive where the Windows Vista installation media is located.
4. Restart your computer
This will simply make Windows Vista the default booting operating system. The Windows 7 upgrade issue itself is currently under investigation by Microsoft. An alternative would be to perform a clean install (see Clean Install Windows 7 With Windows 7 Upgrades) and use the Windows Easy Transfer tool to transfer user settings and files to the new operating system. (Thanks Dante for sending in the news)
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Ghacks is a technology news blog that was founded in 2005 by Martin Brinkmann. It has since then become one of the most popular tech news sites on the Internet with five authors and regular contributions from freelance writers.