Please note that Microsoft does not provide a full product key in this scenario. When it is determined that the end user has an eligible Windows license, the customer service representative will provide a single-use activation code to activate the software.
Call the number and explain the circumstances. In this case, the appropriate local Activation Support phone number will be displayed. If the software was previously activated, it cannot be activated online.Click to select 'Show hidden files and folders' 4.
If it's not there, make sure you can see the Windows.old folder: 1. Insert the downgrade-eligible version of Windows media and follow the installation instructions. Open Windows Explorer and under 'Computer' click on the C: drive - if the Windows.old folder is there you should be able to revert back to XP/Vista.End users who are licensed separately through Microsoft Volume Licensing (VL) may provide their VL media and key to a system builder to facilitate the downgrade on their own systems.If it doesn’t you can manually activate your machine in Windows 7 by clicking Start > Control Panel.
The media/key should come from a previously licensed product from the OEM or retail channel. Your computer should automatically alert you that online activation failed.
