So i was using a program called Shutup10 for quite awhile now to Disable Cortana and a bunch of other crap i didn't want running, but after the latest windows update it completely broke my start menu, and Cortana was constant 25% CPU usage, well after some research and testing out stuff, i found out that Cortana in the Task manager also shares the same process as windows search, which would explain why it was still using CPU everytime i would open the start menu, even though it was suppose to be disabled, so i disabled Bing search from the start menu, with a Regedit, and what you know, broken start menu, and constant 25% CPU in Task manager, and to think i only was able to figure this out AFTER i had already reinstalled windows, when all i needed to do was revert Shutup10 back to default settings, and go from there... Sigh.