I want to post this tool as a solution to the horrible situation where the checkbox in the LAN settings cannot be unchecked no matter what you do
Based on my internet search, this is a common enough problem with thousands of windows users. The All-in-One tool works like a charm and fixes this problem. I'm posting this in hopes that it will appear in an internet search so you can download this FREE tool. Thanks Shane for your incredible product.
Tweaking.com - Windows Repair (All in One)
http://www.tweaking.com/Just follow the instruction on the website to have your joy restored!