Sorry for language mistakes. Im interested in buying second hande SB1. I have a question. How loud does the fan work ? For example if i open only program like "Word" and "PDF Viewer" fan is completely turn off ? Im intereted in using laptop as "notebook" (pen) and at the same time "pdf reader". Im looking for 2 in 1 laptop with pen which is very quiet (preferably completely silent) during such a work.