So I came across this issue installing Windows 7 Home Premium on my more than capable MacPro 1,1.
I couldn't get the execute command in "elevated privilege" mode previously stated to work from the command line or from "right-clicking".
The trick is to click on Start, type in the "Search programs and files" box, type "cmd" and then hit "ctrl+shift+return". This executes the command prompt in Elevated privileges mode, and then run your msiexec /i command.
You know, I was wondering if you were to insert your computers Boot Rom Version profile into the ""<key>DARequiredROMVersions</key>"" description in the .plist file in Boot Camp Assistant, like you would for the MBA hack as it were for the un-dimming of the "Create a Windows install disk" option if it would install normally?
Oh buggers, I was thinking of something else.
Message was edited by: Jaygyver
I had the same problem too with my Unibody Macbook late 2008 model with Windows 7 64bit.
I tried troubleshooting compatibility and all that and it still wont run.
The way i got around it was:
1) Copy the BootCamp data onto my desktop
2) to basically disable UAC (User Account Control) setting in control panel to "never notify" and make sure you are in administrator account, then restart windows.
3) I then navigate BootCamp\Drivers\Apple\BootCamp.msi -> and run the installer. Voila! everything installs.
BTW, I used Boot Camp 4 downloaded from Apple website. Not sure if it works running BootCamp from pendrive.
Hope that helps