fringelife,
This error has nothing to do with BIOS; it's strictly an issue at the IDU installer level. It seems like you've somehow developed some sort of corruption (or interlock/permission issue) in your registry. If you are daring, here is something you can try:
1. Right click on the start button and invoke "Command Prompt (admin)".
2. Start Registry Editor using command "regedit".
2. Browse to key "HKEY_LOCAL_MACHINE\SOFTWARE\Wow6432Node\Intel".
3. Delete subkey "Desktop Board" (Right click on subkey "Desktop Board" and select Delete. Select "yes" when asked to permanently delete this key and all subkeys - but only after verifying you did indeed select subkey "Desktop Board" for deletion)
5. Close Registry Editor.
6. Close Command Prompt.
7. Re-attempt IDU install (right click on the IDU Setup.exe file and choose "Run as Administrator").
If you are a little leery about doing something at this level, I can prepare a registry merge file that does this for you...
...Scott