Windows 7 is not doubt is the best operating system till now from Microsoft, so many of my friend has upgraded their computers to run windows 7, however you can upgrade to windows 7 only if you are running vista but with xp you cant as is not allowed by Microsoft due to a large change in Windows XP and Windows 7, you will need to clean install, or install windows 7 in dual boot.
Just in case there are some instances when people had tried to upgrade their computers, the faced the following messages
- The upgrade was not successful.
- Your previous version of windows is being restored.
- Do not restart your computer during this time.
and some systems entered a endless reboot when windows 7 upgrade fails, in order to firstly avoid these issue, we would suggest you to use Windows 7 Upgrade Advisor. This issue may occur because the computer contains one or more shell folders (Documents, Pictures, Music, and so on) that are redirected to locations within their own paths.
When such issues are encountered, The upgrade process starts again and then fails with the same error message. This issue occurs repeatedly and the upgrade process is stuck in a reboot loop. To resolve the endless reboots, you will have to access the Windows Recovery environment, locate the duplicate folders, and then move the duplicate folders to a temporary location. After the system successfully rolls back to Windows Vista, you will have to take additional steps to avoid the problem before you upgrade to Windows 7.
How To Access The Windows Recovery Environment
To access the Windows Recovery Environment, follow these steps:
- Put the Windows 7 installation disc in the DVD drive, and then restart the computer.
- Press a key when you are prompted to restart from the disc.
- In the Install Windows window, select a language, a time, a currency, a keyboard input method or other input method, and then click Next.
- In the Install Windows window, click Repair your computer.
Note Do not click the Install Now button.
- In the System Recovery Options window, click the version of the Windows 7 operating system that you want to repair, take note of the drive letter that is assigned to the operating system (like C:), and then click Next.
- In the System Recovery Options window, click Command Prompt.
- A command prompt window opens.
Read in detail, how to fix this issue here
[ Source – The Windows Blog ]