If you look in Device Manager > Display Adapters > should show what Graphics are used. (You state that your wife's comp is identical to your one.) One search showed the guy updated his graphics driver and it fixed his StackHash_0a9e problem. An Auto update from MS may have changed his graphics drivers! Another search brought up this:Internet Explorer 11 crashing due to Identity Protection add-on | Norton Community This one suggests running the Rkill and TDSSKiller from within Safe Mode: Internet Explorer has stopped Working.