Here's a general tip for discovering such things:
1. Run regedit and right-click on Computer at the top, then export the entire registry to a .reg file.
2. Change the setting.
3. Repeat step 1 again and export to a different .reg file.
4. Use a text file comparison tool to determine what's changed between the before and after .reg files.
Since some things may have changed for unrelated reasons, you may have to use a bit of intuition, but if you get the task done fairly quickly and without doing much in between, usually the number of changes are minimal and the actual setting you seek
is obvious.
-Noel
Detailed how-to in my eBooks:
Configure The Windows 7 "To Work" Options
Configure The Windows 8 "To Work" Options
There is an amazing pack of free network admin tools.
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