windows was unable to save all the data for the file... The data has been lost. This error may be caused by a failure of your compuer hardware or network connection. Please try to save this file to another location.
It's good that you listed the error message, but need to add some info along with it, like what you are trying to do, when this started, what you tried alredy, where are you trying to save to, does that device work aside from this error?