My mom was writing a text in Office Word and she wanted to save it on her USB flash drive. She says that the computer was trying to save it for a long time and then a text popped up (she didn't read it carefully and doesn't remember what it said) and in upper left corner, next to the document name, it said ''Not responding''. She closed the pop-up window and continued to write the text for approximately 20 minutes. During this period she continued saving the file over and over successfully and made a copy of it on desktop.