Is your computer rebooting continuously, after you tried upgrading your Windows Vista to Windows 7 and the installation failed? This issue may be caused by the fact that the Boot Configuration Database (BCD) store has not been properly updated to restore Windows Vista as the default operating system to boot.
When you upgrade from Vista to Windows 7, the upgrade installation may sometimes fail and you may encounter the following message.
“This version of Windows could not be installed, Your previous version of Windows has been restored, and you can continue to use it.”
However, when you try to reboot the computer, instead of booting to windows Vista, the PC may by default launch the Windows 7 upgrade process again and fail with the same message. This may be caused by the failure to update Boot Configuration Database (BCD) in restoring Windows Vista as the default OS.
If you face any such issues, you may resolve it by following the steps outlined below.
- 1. Reboot the computer and select Windows Vista in the boot entry menu. The menu will point to “Windows 7 Setup” by default and if you don’t select Vista, the computer will try to restart Windows 7 installation and fail again.
- 2. Next, insert the Windows Vista Installation Disk into the DVD drive. The Windows Vista Setup will be automatically launched and you may then exit the setup.
- 3. Then, open the command prompt. To open it, click Start => All Programs => Accessories, right-click the “Command Prompt” icon, and then click “Run as Administrator”.
- 4. At the command prompt, enter the following command and press ENTER.
Drive:\boot\Bootsect.exe /NT60 All
In the above command, replace “Drive” with the appropriate DVD drive letter i.e. D or E or any other drive letter where you had inserted the Windows vista installation disk.
- 5. Finally, restart the computer and it will boot into Windows Vista.
That is all. The Windows 7 upgrade process might have failed due to several reasons that includes hardware incompatibility.However, you could avoid this if you follow the proper steps in upgrading Vista to Windows 7.
You can also do a Custom install of windows 7 instead of upgrading vista to 7. Find out how to install Windows 7 using the “Custom (advanced)” option which is sometimes referred to as a “Clean” install.
If you are on Windows XP, you may check out this tutorial on how to Upgrade XP to Windows 7.