try changing / disabling the "Enhanced security feature" in IE11 in Security tab and also viewing in Compatibility mode. "
I did as you suggested, I disabled the "Protected Mode" option under the security tab, also un-checked " use microsoft comparability lists" in the settings area. After doing so..of course I received the notice that changing the
"Protected Mode" setting would put my computer at risk, I closed IE 11, then re-started it, after doing so, I was able to access gmail. I signed out, and tried to log back in..and then it just 'hung' as before. Windows 8.1 / IE 11 is somewhat 'flakey' in my opinion !