Hi I will try to help you!You might need the media creation tool, but try this first. I will be logging on and off all day! If you need more help,please join the forum!
http://forums.windowscentral.com/ask...community.html Start your computer and follow the POST, when Windows should begin loading, press the power button to shutdown your computer.
Repeat the previous step twice, and in the third restart the operating system should enter into the Windows Recovery Environment (Windows RE), where a number of diagnostics will be performed to try fix any booting issues, but you will also get an option to access the Windows Startup Settings.