Someone posted this problem back in January with SW 2009.  I am running sw2011 and have been having this problem for weeks (months?)  I was so busy working I did not have a lot of time to mess around with it.  i am now out of work so am trying to resolve.  I have done everything from a clean install, ran into problems there so ended up reinstalling (after sys restore).  Here is the thread and Kelvin's reply which apparently worked for Nick.  http://https://forum.solidworks.com/thread/40761 But it did not work for me.  it was set to 4 and I changed it to 0, rebooted, still a problem - here is what my screen looks like when CM is on - please help!

Edit - here is another pic of what happens.  If I resize it, I still have no icons and get these funny arrows on top and side.  The way I have gotten around no icons is to have a bunch of toolbars(!) - PITA!