Windows 10 Build 10586 Update Install Fail

Hi guys, well I installed Windows 10 build 10240, the first version of Windows 10 I'm guessing, and it gave me an update to install 10586. I did update it, but then roughly 30 minutes later, it says I'm restoring previous version of Windows. I tried signing up for the Insider Preview too. That didn't work. I don't want to reinstall Windows, as I have made a lot of progress on this. Please help me as soon as possible. I want the latest build with new features, but the Mac is being a pain in the ***. <---- Sorry for the "explicit" language, please excuse me. Everything has been going well except for update and installations. 🙂