Question : reset local security policy option

I'm running windows 7 professional, 64 bit, and as you all know there's the security policies known as local security policy under this lies a list of network security policies one of them is called Lan Manager Authentication Level, on a fresh install it is set to not defined, is there anyway I can return to this state, I changed it to NTLM2, and I would like to have it back at "not defined"

Answer : reset local security policy option

Hi Tim86

Run the tweak test to find if there is any necessary parameter to tweak about your internet streaming bandwith.
http://www.dslreports.com/tweaks

To check the video playback performance, try to play a very high resolution streaming content and check your cpu usage using task manager.
Like this one here.
http://www.youtube.com/watch?v=N0m1XmvBey8
So try to change a few things, like disable aero or closing some programs!~

Good luck!