I don't have the Enable Enhanced Protected Mode option. To be fair though, I don't use IE (have it uninstalled even from Windows Features.
I dont thing this effect whole system. Wanna do something real go Control Panel -> Action Center and turnoff SmartScreen
A lot of apps won't work because UAC can't be completely turned off in control panel. You can turn it off like this. But then those tile apps won't work. HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System In the right pane look for EnableLUA and modify its value to 0. Reboot.