usually the sign out icon is found in area highlighted:
You'll notice I'm using Chrome, perhaps, if your using IE10 you need to press the compatibility tab in the address bar? It looks like a rectangle with a slash going through it diagonally.
It might also interest you to know that you can have your email directed to the mail app in the Modern UI screen or Metro. If this is something that might interest you then please let us know and we can set you on the right path.
many thanks for your reply but I cannot find any highlighted areas that state sign out
and also there is no compatability tab in the address bar
on my tablet and other laptop there is the log out sign but nothing on this
could you take a screenshot for me? This can easily be done by holding down the windows key and then pressing the 'print screen' key. You'll find a folder in your pictures library entitled screenshots, your screenshot can be found here. Use windows paint to then save it as a jpeg and post it in the forum.