.BS7 File Extension
File TypeWindows 7 Boot Updater Skin
What is a BS7 file?
Skin file created by Windows 7 Boot Updater, a third-party Windows program used for updating the appearance of the Windows 7 boot screen; can incorporate background colors, images, animations, and various fonts; may also include replacement messages for the "Starting Windows" and "© Microsoft Corporation" text.
When you have finished modifying the settings in Windows 7 Boot Updater, you can click thebutton to apply the skin.