Are you running Windows directly or through Parallels? The ACPI driver issue is fixed, but it might still reinstall one more time after Parallels Tools is updated. If you haven't run your Boot Camp partition through Parallels yet you need to do so to update Parallels Tools. The Parallels Tools installer should start automatically. If it doesn't then follow Erich's suggestion and select "Install Parallels Tools..." from the "Actions" menu.
Edit:
It should have, so if it doesn't you might want to uninstall and reinstall Parallels Tools just to avoid any possible issues.
Last edited: Jul 19, 2007