Try this, right click the desktop, select New then Shortcut. In the box that opens copy and paste this,
"%ProgramFiles%\Internet Explorer\iexplore.exe" -extoff , then click Next and name it something like IE no-addons then click finish.
Now double click the shortcut to see if IE opens. If it does then select tools, internet options, Advanced tab and click on the reset tab so resetting IE to default settings. Close the no-addons IE and open the normal one to see if it works. This is for desktop mode and don't know if it repairs the Metro IE.