To fully remove this annoying application that refuses to install, which is highly inapprorpiate, especially under domain environments and roaming profiles on laptops/desktops, perform the following steps (I was using Win7):
- Uninstall BestBuy application from Add/Remove in Control Panel
- Delete the "bestbuy" key under HKLU\Software\Microsoft\CurrentVersion\Run
- Open Computer (If Win7/Vista)
- Press ALT key and go to Tools, Folder Options, and select the box "Show hidden files, folders, and drives" and click on OK
- Now go into your C drive, and go into the semi-transparent (hidden) folder ProgramData
- I had a CLSID of "{FBF3739B-717D-4429-BCEB-98D514E65F29}" your may be different, which should have all the BestBuy-related files in there. Right-click the setup file and choose Uninstall. Allow that to finish.
- Finally DELETE both the corresponding CLSID AND the BestBuy folder in the ProgramData directory.
Reboot.
Hope this helps.