If you are attempting to create a 64bit bootable USB/DVD in a 32bit environment or any bootable disk with the Windows 7 USB/DVD Download Tool and are getting this error:
Then you need to copy a bootsect fle: Windows 7 USB/DVD Download Tool Directory (where you will copy bootsect.exe to): C:UsersKnappyAppDataLocalAppsWindows 7 USB DVD Download Tool
Copy the included bootsect.exe file to your Windows 7 USB/DVD Download Tool Installation folder:
(e.g; C:Documents and SettingsAdminLocal SettingsApplication DataAppsWindows 7 USB DVD Download Tool)
(e.g, C:UsersKnappyAppDataLocalAppsWindows 7 USB DVD Download Tool)
Here are links to clean ISO's available from Microsoft. You will need to activate after 30 days: