Ok, I can see that people want to try to disable the LUAFV driver in Vista on their own so they can test my findings with boot times and UAC. So here it is. Of course use this at your own risk, I hold no responsibility if this tweak should cause your computer to spontaneously combust or eat your children.
- Open the Registry Editor.
- Navigate to “HKEY_LOCAL_MACHINE\System\CurrentControlSet\Services\luafv”
- Double click the “start” string value, and set it to 4.
- Reboot and see the improvement.
So there you have it. Test it and see how it works for you, of course your results may vary but it should render an improvement for the majority. Any questions or comments, well don’t be afraid to use the comments feature. I promise I won’t bite……too hard.


I had disabled UAC and noticed that after a while my compuer was hanging for about 2-3 mins during boot up. After reading your article, I re-enabled UAC. For about 1 to 2 weeks, I continued to experience the hang during reboot. Then I suddenly noticed that the computer is no longer hanging. It’s back to rebooting normally - about as quick as when I first installed Vista.
Never tried to disable the LUAFV driver, so don’t know if that would have helped or not. Has anyone else experienced Vista going back to normal boot after re-enabling UAC?
I am runnning Vista Home Premium on a Quad core Q6600 with 4 GB of memory and NVidia 8500 with 256 MB. This system rocks with Vista. Overall, I am quite happy with Vista (as long as the hardware can handle it).
User Account Control: Should have been named “Unauthorized Asshole Control” — helps keep the gays out of your ass when you’re walking through an uncharted allyway in the middle of the fucking Bronx.