Flashtool Drivers
Had to install the older Flashtool version 0.9.3.0. Installed the flashtool, flashboot and adb drivers already bundled with application. Flashed, Rooted. Oct 13, 2013 - After successfully installing Flashtool setup I headed up to installing flashtool drivers. I selected the needed drivers from the list and executed.
Remember to save all your work first before clicking it. The computer reboots to a 'Startup Menu', then click 'Troubleshoot' Click 'Advanced Options' at next screen Click 'Startup Settings' at next screen Click 'Restart button' at next screen When your computer reboots another menu will appear. Item# 7) is to 'Disable driver signature enforcement'. Press number 7 or F7 to continue booting to Windows 8 with digital signature enforcement disabled. Now when you install the driver you will get the following prompt, select 'Install this driver software anyway'.